Devices, methods, and graphical user interfaces for attention based scrolling and object interactions

Abstract

Some examples are directed to systems and methods for scrolling scrollable content in response to gaze-based inputs. Some examples are directed to systems and methods for scrolling scrollable content in response to gaze-based inputs and / or input provided by a respective input element. Some examples are directed to systems and methods for displaying virtual objects with an appearance that is based upon a duration of attention directed to the virtual objects. Some examples are directed to systems and methods for displaying animations of virtual objects. Some examples are directed to changing values of audio parameters based on attention of a user. Some examples are directed to changing gaze scrolling regions of content based on characteristics of the content.

Description

DEVICES, METHODS, AND GRAPHICAL USER INTERFACES FOR ATTENTION BASED SCROLLING AND OBJECT INTERACTIONSCROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Application No. 63 / 818,951, filed June 6, 2025, U.S. Provisional Application No. 63 / 805,144, filed May 13, 2025, and U.S. Provisional Application No. 63 / 657,968, filed June 9, 2024, the contents of which are herein incorporated by reference in their entireties for all purposes.TECHNICAL FIELD

[0002] The present disclosure relates generally to computer systems that provide computer-generated experiences, including, but not limited to, electronic devices that provide virtual reality and mixed reality experiences via a display.BACKGROUND

[0003] The development of computer systems for augmented reality has increased significantly in recent years. Example augmented reality environments include at least some virtual elements that replace or augment the physical world. Input devices, such as cameras, controllers, joysticks, touch-sensitive surfaces, and touch-screen displays for computer systems and other electronic computing devices are used to interact with virtual / augmented reality environments. Example virtual elements include virtual objects, such as digital images, video, text, icons, and control elements such as buttons and other graphics.SUMMARY

[0004] Some methods and interfaces for interacting with environments that include at least some virtual elements (e.g., applications, augmented reality environments, mixed reality environments, and virtual reality environments) are cumbersome, inefficient, and limited. For example, systems that provide insufficient feedback for performing actions associated with virtual objects, systems that require a series of inputs to achieve a desired outcome in an augmented reality environment, and systems in which manipulation of virtual objects are complex, tedious, and error-prone, create a significant cognitive burden on a user, and detract from the experience with the virtual / augmented reality environment. In addition, these methods take longer than necessary, thereby wasting energy of the computer system. This latter consideration is particularly important in battery-operated devices.

[0005] Accordingly, there is a need for computer systems with improved methods and interfaces for providing computer-generated experiences to users that make interaction with the computer systems more efficient and intuitive for a user. Such methods and interfaces optionally complement or replace conventional methods for providing extended reality experiences to users. Such methods and interfaces reduce the number, extent, and / or nature of the inputs from a user by helping the user to understand the connection between provided inputs and device responses to the inputs, thereby creating a more efficient human-machine interface.

[0006] The above deficiencies and other problems associated with user interfaces for computer systems are reduced or eliminated by the disclosed systems. In some embodiments, the computer system is a desktop computer with an associated display. In some embodiments, the computer system is portable device (e.g., a notebook computer, tablet computer, or handheld device). In some embodiments, the computer system is a personal electronic device (e.g., a wearable electronic device, such as a watch, or a head-mounted device). In some embodiments, the computer system has a touchpad. In some embodiments, the computer system has one or more cameras. In some embodiments, the computer system has (e.g., includes or is in communication with) a display generation component (e.g., a display device such as a headmounted device (HMD), a display, a projector, a touch-sensitive display (also known as a “touch screen” or “touch-screen display”), or other device or component that presents visual content to a user, for example on or in the display generation component itself or produced from the display generation component and visible elsewhere). In some embodiments, the computer system has one or more eye-tracking components. In some embodiments, the computer system has one or more hand-tracking components. In some embodiments, the computer system has one or more output devices in addition to the display generation component, the output devices including one or more tactile output generators and / or one or more audio output devices. In some embodiments, the computer system has a graphical user interface (GUI), one or more processors, memory and one or more modules, programs or sets of instructions stored in the memory for performing multiple functions. In some embodiments, the user interacts with the GUI through a stylus and / or finger contacts and gestures on the touch-sensitive surface, movement of the user’s eyes and hand in space relative to the GUI (and / or computer system) or the user’s body as captured by cameras and other movement sensors, and / or voice inputs as captured by one or more audio input devices. In some embodiments, the functions performed through the interactions optionally include image editing, drawing, presenting, word processing, spreadsheet making, game playing, telephoning, video conferencing, e-mailing, instant messaging, workoutsupport, digital photographing, digital videoing, web browsing, digital music playing, note taking, and / or digital video playing. Executable instructions for performing these functions are, optionally, included in a transitory and / or non-transitory computer readable storage medium or other computer program product configured for execution by one or more processors.

[0007] There is a need for electronic devices with improved methods and interfaces for interacting with a three-dimensional environment. Such methods and interfaces may complement or replace conventional methods for interacting with a three-dimensional environment. Such methods and interfaces reduce the number, extent, and / or the nature of the inputs from a user and produce a more efficient human-machine interface. For battery-operated computing devices, such methods and interfaces conserve power and increase the time between battery charges.

[0008] In some embodiments, a computer system displays scrollable content. In some embodiments, the computer system detects a gaze of a user of the computer system directed to the scrollable content. In some embodiments, in accordance with a determination that the gaze is directed to a first type of content of the scrollable content, the computer system scrolls the scrollable content at a first speed. In some embodiments, in accordance with a determination that the gaze is directed to a second type of content of the scrollable content, the computer system scrolls the scrollable content at a second speed, different from the first speed.

[0009] In some embodiments, a computer system displays scrollable content. In some embodiments, the computer system detects a gaze of a user of the computer system directed to the scrollable content. In some embodiments, in accordance with a determination that a respective input element is not providing an input to scroll the scrollable content, the computer system scrolls the scrollable content. In some embodiments, in accordance with a determination that a respective input element is providing an input to scroll the scrollable content, the computer system forgoes scrolling the scrollable content.

[0010] In some embodiments, a computer system displays virtual objects. In some embodiments, the computer system detects attention (e.g., gaze) of the user of the computer directed to the virtual objects. In some embodiments, in accordance with a determination that the duration for which the attention of the user has been directed to the first virtual object exceeds a time threshold, change a visual appearance of the virtual objects. In some embodiments, in accordance with a determination that the duration for which the gaze of the user has been directed to the first virtual object exceeds a second threshold, change a visual appearance of the virtual objects including displaying visual content.

[0011] In some embodiments, a computer system displays an animation of a virtual object. In some embodiments, an animation is based on an animation curve. In some embodiments, the animation is based on interpolation between two or more appearance states. In some embodiments, the animation is displayed in response to detecting attention directed to the virtual object. In some embodiments, the animation curves for different virtual objects are the same animation curve. In some embodiments, the animation curve includes a plurality of portions. In some embodiments, the rate of the animation curve changes over time. In some embodiments, the animation curve is at least partially non-linear.

[0012] In some embodiments, a computer system transitions between video content items that are displayed in a three-dimensional environment. In some embodiments, while playing the first video content item, the computer system detects a gaze of the user of the computer system move to a second video content item and in response initiates a process to transition from playing the first video content item, to playing the second video content item.

[0013] In some embodiments, a computer system changes one or more properties of gaze scrolling regions associated with scrollable content based on characteristics of content including the scrollable content (e.g., based on characteristics of non-scrolling content). In some embodiments, the computer system modifies (e.g., expands or contracts) the gaze scrolling regions, and in some embodiments, the computer system eliminates the gaze scrolling regions.

[0014] Note that the various embodiments described above can be combined with any other embodiments described herein. The features and advantages described in the specification are not all inclusive and, in particular, many additional features and advantages will be apparent to one of ordinary skill in the art in view of the drawings, specification, and claims. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter.BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For a better understanding of the various described embodiments, reference should be made to the Description of Embodiments below, in conjunction with the following drawings in which like reference numerals refer to corresponding parts throughout the figures.

[0016] Figure 1 A is a block diagram illustrating an operating environment of a computer system for providing XR experiences in accordance with some embodiments.

[0017] Figures 1B-1P are examples of a computer system for providing XR experiences in the operating environment of Figure 1 A.

[0018] Figure 2 is a block diagram illustrating a controller of a computer system that is configured to manage and coordinate a XR experience for the user in accordance with some embodiments.

[0019] Figure 3 A is a block diagram illustrating a display generation component of a computer system that is configured to provide a visual component of the XR experience to the user in accordance with some embodiments.

[0020] Figures 3B-3G illustrate the use of Application Programming Interfaces (APIs) to perform operations.

[0021] Figure 4 is a block diagram illustrating a hand tracking unit of a computer system that is configured to capture gesture inputs of the user in accordance with some embodiments.

[0022] Figure 5 is a block diagram illustrating an eye tracking unit of a computer system that is configured to capture gaze inputs of the user in accordance with some embodiments.

[0023] Figure 6 is a flow diagram illustrating a glint-assisted gaze tracking pipeline in accordance with some embodiments.

[0024] Figs. 7A-7BB illustrate exemplary ways in which a computer system scrolls scrollable content in response to gaze-based inputs in accordance with some embodiments of the disclosure.

[0025] Fig. 8 illustrates a flow diagram illustrating a method in which a computer system scrolls scrollable content in response to gaze-based inputs in accordance with some embodiments of the disclosure.

[0026] Figs. 9A-9KK illustrate exemplary ways in which a computer system scrolls scrollable content in response to gaze-based inputs and / or input provided by a respective input element in accordance with some embodiments of the disclosure.

[0027] Fig. 10 illustrates a flow diagram illustrating a method in which a computer system scrolls scrollable content in response to gaze-based inputs and / or input provided by a respective input element in accordance with some embodiments of the disclosure.

[0028] Figs. 11 A-l 1 V illustrate exemplary ways in which a computer system displays a virtual object with an appearance based upon a duration of attention directed to the virtual object in accordance with some embodiments of the disclosure.

[0029] Fig. 12 illustrates a flow diagram illustrating a method in which a computer system displays a virtual object with an appearance based upon a duration of attention directed to the virtual object in accordance with some embodiments of the disclosure.

[0030] Figs. 13A-13HH illustrate exemplary ways in which a computer system animates virtual objects based on animation curves in accordance with some embodiments of the disclosure.

[0031] Fig. 14 illustrates a flow diagram illustrating a method in which a computer system animates virtual objects based on animation curves in accordance with some embodiments of the disclosure.

[0032] Figs. 15A-15U illustrate exemplary ways in which an electronic device transitions between playing content items based on a detected attention of the user in accordance with some embodiments of the disclosure.

[0033] Fig. 16 illustrates a flow diagram illustrating a method in which an electronic device transitions between playing content items based on a detected attention of the user in accordance with some embodiments of the disclosure.

[0034] Figs. 17A-17F illustrate exemplary ways in which a computer system modifies gaze scrolling regions in accordance with some embodiments of the disclosure.

[0035] Fig. 18 illustrates a flow diagram illustrating a method in which a computer system modifies gaze scrolling regions in accordance with some embodiments of the disclosure.DESCRIPTION OF EMBODIMENTS

[0036] The present disclosure relates to user interfaces for providing an extended reality (XR) experience to a user, in accordance with some embodiments.

[0037] The systems, methods, and GUIs described herein improve user interface interactions with virtual / augmented reality environments in multiple ways.

[0038] In some embodiments, a computer system displays scrollable content. In some embodiments, the computer system detects a gaze of a user of the computer system directed to the scrollable content. In some embodiments, in accordance with a determination that the gaze isdirected to a first type of content of the scrollable content, the computer system scrolls the scrollable content at a first speed. In some embodiments, in accordance with a determination that the gaze is directed to a second type of content of the scrollable content, the computer system scrolls the scrollable content at a second speed, different from the first speed.

[0039] In some embodiments, a computer system displays scrollable content. In some embodiments, the computer system detects a gaze of a user of the computer system directed to the scrollable content. In some embodiments, in accordance with a determination that a respective input element is not providing an input to scroll the scrollable content, the computer system scrolls the scrollable content. In some embodiments, in accordance with a determination that a respective input element is providing an input to scroll the scrollable content, the computer system forgoes scrolling the scrollable content.

[0040] In some embodiments, a computer system displays virtual objects. In some embodiments, the computer system detects attention (e.g., gaze) of the user of the computer directed to the virtual objects. In some embodiments, in accordance with a determination that the duration for which the attention of the user has been directed to the first virtual object exceeds a time threshold, change a visual appearance of the virtual objects. In some embodiments, in accordance with a determination that the duration for which the gaze of the user has been directed to the first virtual object exceeds a second threshold, change a visual appearance of the virtual objects including displaying visual content.

[0041] In some embodiments, a computer system displays an animation of a virtual object. In some embodiments, an animation is based on an animation curve. In some embodiments, the animation is based on interpolation between two or more appearance states. In some embodiments, the animation is displayed in response to detecting attention directed to the virtual object. In some embodiments, the animation curves for different virtual objects are the same animation curve. In some embodiments, the animation curve includes a plurality of portions. In some embodiments, the rate of the animation curve changes over time. In some embodiments, the animation curve is at least partially non-linear.

[0042] In some embodiments, a computer system transitions from playing a first video content item to playing a second video content item in response to detecting the attention of the user (e.g., based on gaze) being directed to the second video content item. In some embodiments, the transition process includes playing the second video content item concurrently with the first video content item, and gradually increasing the audio associated with the secondvideo content item while gradually decreasing the audio associated with the first video content item. In some embodiments, the transition process terminates with stopping play of the first video content item (including the audio associated with the first video content item) while the second video content item is being played (including the audio associated with the second video content item).

[0043] In some embodiments, a computer system changes one or more properties of gaze scrolling regions associated with scrollable content based on characteristics of content including the scrollable content (e.g., based on characteristics of non-scrolling content). In some embodiments, the computer system modifies (e.g., expands or contracts) the gaze scrolling regions, and in some embodiments, the computer system eliminates the gaze scrolling regions.

[0044] Figures 1 A-6 provide a description of example computer systems for providing XR experiences to users (such as described below with respect to methods 800, 1000, 1200, 1400, and / or 1600). Figures 7A-7BB illustrate example techniques in which a computer system scrolls scrollable content in response to gaze-based inputs, in accordance with some embodiments. Figure 8 illustrates a flow diagram of methods in which a computer system scrolls scrollable content in response to gaze-based inputs, in accordance with some embodiments. The user interfaces in Figures 7A-7BB are used to illustrate the processes in Figure 8. Figures 9A- 9KK illustrate example techniques in which a computer system scrolls scrollable content in response to gaze-based inputs and / or input provided by a respective input element, in accordance with some embodiments. Figure 10 illustrates a flow diagram of methods in which a computer system scrolls scrollable content in response to gaze-based inputs and / or input provided by a respective input element, in accordance with some embodiments. The user interfaces in Figures 9A-9KK are used to illustrate the processes in Figure 10. Figures 11 A-l IV illustrate example techniques for displaying a virtual object with an appearance based upon a duration of attention directed to the virtual object, in accordance with some embodiments. Figure 12 illustrates a flow diagram of methods displaying a virtual object with an appearance based upon a duration of attention directed to the virtual object, in accordance with some embodiments. The user interfaces in Figures 11 A-l IV are used to illustrate the processes in Figure 12. Figures 13A- 13HH illustrate ways in which a computer system animates virtual objects based on animation curves in accordance with some embodiments. Figure 14 illustrates a flow diagram of methods of animating virtual objects based on animation curves, in accordance with some embodiments. The user interfaces in Figures 13A-13HH are used to illustrate the processes in Figure 14. Figures 15A-15U illustrate example techniques for transitioning playing of video content basedon the detected attention of the user, in accordance with some embodiments. Figure 16 illustrates a flow diagram of methods for transitioning playing of video content based on the detected attention of the user, in accordance with some embodiments. The user interfaces in Figures 15A- 15U are used to illustrate the processes in Figure 16. Figures 17A-17F illustrate example techniques for modifying gaze scrolling regions based on characteristics of content. Figure 18 illustrates a flow diagram of methods for modifying gaze scrolling regions based on characteristics of content, in accordance with some embodiments. The user interfaces in Figures 17A-17F are used to illustrate the processes in Figure 18.

[0045] The processes described below enhance the operability of the devices and make the user-device interfaces more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating / interacting with the device) through various techniques, including by providing improved visual feedback to the user, reducing the number of inputs needed to perform an operation, providing additional control options without cluttering the user interface with additional displayed controls, performing an operation when a set of conditions has been met without requiring further user input, improving privacy and / or security, providing a more varied, detailed, and / or realistic user experience while saving storage space, and / or additional techniques. These techniques also reduce power usage and improve battery life of the device by enabling the user to use the device more quickly and efficiently. Saving on battery power, and thus weight, improves the ergonomics of the device. These techniques also enable real-time communication, allow for the use of fewer and / or less-precise sensors resulting in a more compact, lighter, and cheaper device, and enable the device to be used in a variety of lighting conditions. These techniques reduce energy usage, thereby reducing heat emitted by the device, which is particularly important for a wearable device where a device well within operational parameters for device components can become uncomfortable for a user to wear if it is producing too much heat.

[0046] In addition, in methods described herein where one or more steps are contingent upon one or more conditions having been met, it should be understood that the described method can be repeated in multiple repetitions so that over the course of the repetitions all of the conditions upon which steps in the method are contingent have been met in different repetitions of the method. For example, if a method requires performing a first step if a condition is satisfied, and a second step if the condition is not satisfied, then a person of ordinary skill would appreciate that the claimed steps are repeated until the condition has been both satisfied and not satisfied, in no particular order. Thus, a method described with one or more steps that arecontingent upon one or more conditions having been met could be rewritten as a method that is repeated until each of the conditions described in the method has been met. This, however, is not required of system or computer readable medium claims where the system or computer readable medium contains instructions for performing the contingent operations based on the satisfaction of the corresponding one or more conditions and thus is capable of determining whether the contingency has or has not been satisfied without explicitly repeating steps of a method until all of the conditions upon which steps in the method are contingent have been met. A person having ordinary skill in the art would also understand that, similar to a method with contingent steps, a system or computer readable storage medium can repeat the steps of a method as many times as are needed to ensure that all of the contingent steps have been performed.

[0047] In some embodiments, as shown in Figure 1 A, the XR experience is provided to the user via an operating environment 100 that includes a computer system 101. The computer system 101 includes a controller 110 (e.g., processors of a portable electronic device or a remote server), a display generation component 120 (e.g., a head-mounted device (HMD), a display, a projector, a touch-screen, etc.), one or more input devices 125 (e.g., an eye tracking device 130, a hand tracking device 140, other input devices 150), one or more output devices 155 (e.g., speakers 160, tactile output generators 170, and other output devices 180), one or more sensors 190 (e.g., image sensors, light sensors, depth sensors, tactile sensors, orientation sensors, proximity sensors, temperature sensors, location sensors, motion sensors, velocity sensors, etc.), and optionally one or more peripheral devices 195 (e.g., home appliances, wearable devices, etc.). In some embodiments, one or more of the input devices 125, output devices 155, sensors 190, and peripheral devices 195 are integrated with the display generation component 120 (e.g., in a head-mounted device or a handheld device).

[0048] When describing an XR experience, various terms are used to differentially refer to several related but distinct environments that the user may sense and / or with which a user may interact (e.g., with inputs detected by a computer system 101 generating the XR experience that cause the computer system generating the XR experience to generate audio, visual, and / or tactile feedback corresponding to various inputs provided to the computer system 101). The following is a subset of these terms:

[0049] Physical environment: A physical environment refers to a physical world that people can sense and / or interact with without aid of electronic systems. Physical environments, such as a physical park, include physical articles, such as physical trees, physical buildings, andphysical people. People can directly sense and / or interact with the physical environment, such as through sight, touch, hearing, taste, and smell.

[0050] Extended reality: In contrast, an extended reality (XR) environment refers to a wholly or partially simulated environment that people sense and / or interact with via an electronic system. In XR, a subset of a person’s physical motions, or representations thereof, are tracked, and, in response, one or more characteristics of one or more virtual objects simulated in the XR environment are adjusted in a manner that comports with at least one law of physics. For example, a XR system may detect a person’s head turning and, in response, adjust graphical content and an acoustic field presented to the person in a manner similar to how such views and sounds would change in a physical environment. In some situations (e.g., for accessibility reasons), adjustments to characteristic(s) of virtual object(s) in a XR environment may be made in response to representations of physical motions (e.g., vocal commands). A person may sense and / or interact with a XR object using any one of their senses, including sight, sound, touch, taste, and smell. For example, a person may sense and / or interact with audio objects that create a 3D or spatial audio environment that provides the perception of point audio sources in 3D space. In another example, audio objects may enable audio transparency, which selectively incorporates ambient sounds from the physical environment with or without computer-generated audio. In some XR environments, a person may sense and / or interact only with audio objects.

[0051] Examples of XR include virtual reality and mixed reality.

[0052] Virtual reality: A virtual reality (VR) environment refers to a simulated environment that is designed to be based entirely on computer-generated sensory inputs for one or more senses. A VR environment comprises a plurality of virtual objects with which a person may sense and / or interact. For example, computer-generated imagery of trees, buildings, and avatars representing people are examples of virtual objects. A person may sense and / or interact with virtual objects in the VR environment through a simulation of the person’s presence within the computer-generated environment, and / or through a simulation of a subset of the person’s physical movements within the computer-generated environment.

[0053] Mixed reality: In contrast to a VR environment, which is designed to be based entirely on computer-generated sensory inputs, a mixed reality (MR) environment refers to a simulated environment that is designed to incorporate sensory inputs from the physical environment, or a representation thereof, in addition to including computer-generated sensory inputs (e.g., virtual objects). On a virtuality continuum, a mixed reality environment is anywherebetween, but not including, a wholly physical environment at one end and virtual reality environment at the other end. In some MR environments, computer-generated sensory inputs may respond to changes in sensory inputs from the physical environment. Also, some electronic systems for presenting an MR environment may track location and / or orientation with respect to the physical environment to enable virtual objects to interact with real objects (that is, physical articles from the physical environment or representations thereof). For example, a system may account for movements so that a virtual tree appears stationary with respect to the physical ground.

[0054] Examples of mixed realities include augmented reality and augmented virtuality.

[0055] Augmented reality: An augmented reality (AR) environment refers to a simulated environment in which one or more virtual objects are superimposed over a physical environment, or a representation thereof. For example, an electronic system for presenting an AR environment may have a transparent or translucent display through which a person may directly view the physical environment. The system may be configured to present virtual objects on the transparent or translucent display, so that a person, using the system, perceives the virtual objects superimposed over the physical environment. Alternatively, a system may have an opaque display and one or more imaging sensors that capture images or video of the physical environment, which are representations of the physical environment. The system composites the images or video with virtual objects, and presents the composition on the opaque display. A person, using the system, indirectly views the physical environment by way of the images or video of the physical environment, and perceives the virtual objects superimposed over the physical environment. As used herein, a video of the physical environment shown on an opaque display is called “pass-through video,” meaning a system uses one or more image sensor(s) to capture images of the physical environment, and uses those images in presenting the AR environment on the opaque display. Further alternatively, a system may have a projection system that projects virtual objects into the physical environment, for example, as a hologram or on a physical surface, so that a person, using the system, perceives the virtual objects superimposed over the physical environment. An augmented reality environment also refers to a simulated environment in which a representation of a physical environment is transformed by computergenerated sensory information. For example, in providing pass-through video, a system may transform one or more sensor images to impose a select perspective (e.g., viewpoint) different than the perspective captured by the imaging sensors. As another example, a representation of a physical environment may be transformed by graphically modifying (e.g., enlarging) portionsthereof, such that the modified portion may be representative but not photorealistic versions of the originally captured images. As a further example, a representation of a physical environment may be transformed by graphically eliminating or obfuscating portions thereof.

[0056] Augmented virtuality: An augmented virtuality (AV) environment refers to a simulated environment in which a virtual or computer-generated environment incorporates one or more sensory inputs from the physical environment. The sensory inputs may be representations of one or more characteristics of the physical environment. For example, an AV park may have virtual trees and virtual buildings, but people with faces photorealistically reproduced from images taken of physical people. As another example, a virtual object may adopt a shape or color of a physical article imaged by one or more imaging sensors. As a further example, a virtual object may adopt shadows consistent with the position of the sun in the physical environment.

[0057] In an augmented reality, mixed reality, or virtual reality environment, a view of a three-dimensional environment is visible to a user. The view of the three-dimensional environment is typically visible to the user via one or more display generation components (e.g., a display or a pair of display modules that provide stereoscopic content to different eyes of the same user) through a virtual viewport that has a viewport boundary that defines an extent of the three-dimensional environment that is visible to the user via the one or more display generation components. In some embodiments, the region defined by the viewport boundary is smaller than a range of vision of the user in one or more dimensions (e.g., based on the range of vision of the user, size, optical properties or other physical characteristics of the one or more display generation components, and / or the location and / or orientation of the one or more display generation components relative to the eyes of the user). In some embodiments, the region defined by the viewport boundary is larger than a range of vision of the user in one or more dimensions (e.g., based on the range of vision of the user, size, optical properties or other physical characteristics of the one or more display generation components, and / or the location and / or orientation of the one or more display generation components relative to the eyes of the user). The viewport and viewport boundary typically move as the one or more display generation components move (e.g., moving with a head of the user for a head mounted device or moving with a hand of a user for a handheld device such as a tablet or smartphone). A viewpoint of a user determines what content is visible in the viewport, a viewpoint generally specfies a location and a direction relative to the three-dimensional environment, and as the viewpoint shifts, the view of the three-dimensional environment will also shift in the viewport. For a head mounteddevice, a viewpoint is typically based on a location an direction of the head, face, and / or eyes of a user to provide a view of the three-dimensional environment that is perceptually accurate and provides an immersive experience when the user is using the head-mounted device. For a handheld or stationed device, the viewpoint shifts as the handheld or stationed device is moved and / or as a position of a user relative to the handheld or stationed device changes (e.g., a user moving toward, away from, up, down, to the right, and / or to the left of the device). For devices that include display generation components with virtual passthrough, portions of the physical environment that are visible (e.g., displayed, and / or projected) via the one or more display generation components are based on a field of view of one or more cameras in communication with the display generation components which typcially move with the display generation components (e.g., moving with a head of the user for a head mounted device or moving with a hand of a user for a handheld device such as a tablet or smartphone) because the viewpoint of the user moves as the field of view of the one or more cameras moves (and the appearance of one or more virtual objects displayed via the one or more display generation components is updated based on the viewpoint of the user (e.g., displayed positions and poses of the virtual objects are updated based on the movement of the viewpoint of the user)). For display generation components with optical passthrough, portions of the physical environment that are visible (e.g., optically visible through one or more partially or fully transparent portions of the display generation component) via the one or more display generation components are based on a field of view of a user through the partially or fully transparent portion(s) of the display generation component (e.g., moving with a head of the user for a head mounted device or moving with a hand of a user for a handheld device such as a tablet or smartphone) because the viewpoint of the user moves as the field of view of the user through the partially or fully transparent portions of the display generation components moves (and the appearance of one or more virtual objects is updated based on the viewpoint of the user).

[0058] In some embodiments a representation of a physical environment (e.g., displayed via virtual passthrough or optical passthrough) can be partially or fully obscured by a virtual environment. In some embodiments, the amount of virtual environment that is displayed (e.g., the amount of physical environment that is not displayed) is based on an immersion level for the virtual environment (e.g., with respect to the representation of the physical environment). For example, increasing the immersion level optionally causes more of the virtual environment to be displayed, replacing and / or obscuring more of the physical environment, and reducing the immersion level optionally causes less of the virtual environment to be displayed, revealingportions of the physical environment that were previously not displayed and / or obscured. In some embodiments, at a particular immersion level, one or more first background objects (e.g., in the representation of the physical environment) are visually de-emphasized (e.g., dimmed, blurred, and / or displayed with increased transparency) more than one or more second background objects, and one or more third background objects cease to be displayed. In some embodiments, a level of immersion includes an associated degree to which the virtual content displayed by the computer system (e.g., the virtual environment and / or the virtual content) obscures background content (e.g., content other than the virtual environment and / or the virtual content) around / behind the virtual content, optionally including the number of items of background content displayed and / or the visual characteristics (e.g., colors, contrast, and / or opacity) with which the background content is displayed, the angular range of the virtual content displayed via the display generation component (e.g., 60 degrees of content displayed at low immersion, 120 degrees of content displayed at medium immersion, or 180 degrees of content displayed at high immersion), and / or the proportion of the field of view displayed via the display generation component that is consumed by the virtual content (e.g., 33% of the field of view consumed by the virtual content at low immersion, 66% of the field of view consumed by the virtual content at medium immersion, or 100% of the field of view consumed by the virtual content at high immersion). In some embodiments, the background content is included in a background over which the virtual content is displayed (e.g., background content in the representation of the physical environment). In some embodiments, the background content includes user interfaces (e.g., user interfaces generated by the computer system corresponding to applications), virtual objects (e.g., files or representations of other users generated by the computer system) not associated with or included in the virtual environment and / or virtual content, and / or real objects (e.g., pass-through objects representing real objects in the physical environment around the user that are visible such that they are displayed via the display generation component and / or a visible via a transparent or translucent component of the display generation component because the computer system does not obscure / prevent visibility of them through the display generation component). In some embodiments, at a low level of immersion (e.g., a first level of immersion), the background, virtual and / or real objects are displayed in an unobscured manner. For example, a virtual environment with a low level of immersion is optionally displayed concurrently with the background content, which is optionally displayed with full brightness, color, and / or translucency. In some embodiments, at a higher level of immersion (e.g., a second level of immersion higher than the first level of immersion), the background, virtual and / or real objects are displayed in an obscured manner (e.g., dimmed,blurred, or removed from display). For example, a respective virtual environment with a high level of immersion is displayed without concurrently displaying the background content (e.g., in a full screen or fully immersive mode). As another example, a virtual environment displayed with a medium level of immersion is displayed concurrently with darkened, blurred, or otherwise de-emphasized background content. In some embodiments, the visual characteristics of the background objects vary among the background objects. For example, at a particular immersion level, one or more first background objects are visually de-emphasized (e.g., dimmed, blurred, and / or displayed with increased transparency) more than one or more second background objects, and one or more third background objects cease to be displayed. In some embodiments, a null or zero level of immersion corresponds to the virtual environment ceasing to be displayed and instead a representation of a physical environment is displayed (optionally with one or more virtual objets such as application, windows, or virtual three-dimensional objects) without the representation of the physical environment being obscured by the virtual environment. Adjusting the level of immersion using a physical input element provides for quick and efficient method of adjusting immersion, which enhances the operability of the computer system and makes the userdevice interface more efficient.

[0059] Viewpoint-locked virtual object: A virtual object is viewpoint-locked when a computer system displays the virtual object at the same location and / or position in the viewpoint of the user, even as the viewpoint of the user shifts (e.g., changes). In embodiments where the computer system is a head-mounted device, the viewpoint of the user is locked to the forward facing direction of the user’s head (e.g., the viewpoint of the user is at least a portion of the field- of-view of the user when the user is looking straight ahead); thus, the viewpoint of the user remains fixed even as the user’s gaze is shifted, without moving the user’s head. In embodiments where the computer system has a display generation component (e.g., a display screen) that can be repositioned with respect to the user’s head, the viewpoint of the user is the augmented reality view that is being presented to the user on a display generation component of the computer system. For example, a viewpoint-locked virtual object that is displayed in the upper left comer of the viewpoint of the user, when the viewpoint of the user is in a first orientation (e.g., with the user’s head facing north) continues to be displayed in the upper left corner of the viewpoint of the user, even as the viewpoint of the user changes to a second orientation (e.g., with the user’s head facing west). In other words, the location and / or position at which the viewpoint-locked virtual object is displayed in the viewpoint of the user is independent of the user’s position and / or orientation in the physical environment. In embodiments in which the computer system isa head-mounted device, the viewpoint of the user is locked to the orientation of the user’s head, such that the virtual object is also referred to as a “head-locked virtual object.”

[0060] Environment-locked virtual object: A virtual object is environment-locked (alternatively, “world-locked”) when a computer system displays the virtual object at a location and / or position in the viewpoint of the user that is based on (e.g., selected in reference to and / or anchored to) a location and / or object in the three-dimensional environment (e.g., a physical environment or a virtual environment). As the viewpoint of the user shifts, the location and / or object in the environment relative to the viewpoint of the user changes, which results in the environment-locked virtual object being displayed at a different location and / or position in the viewpoint of the user. For example, an environment-locked virtual object that is locked onto a tree that is immediately in front of a user is displayed at the center of the viewpoint of the user. When the viewpoint of the user shifts to the right (e.g., the user’s head is turned to the right) so that the tree is now left-of-center in the viewpoint of the user (e.g., the tree’s position in the viewpoint of the user shifts), the environment-locked virtual object that is locked onto the tree is displayed left-of-center in the viewpoint of the user. In other words, the location and / or position at which the environment-locked virtual object is displayed in the viewpoint of the user is dependent on the position and / or orientation of the location and / or object in the environment onto which the virtual object is locked. In some embodiments, the computer system uses a stationary frame of reference (e.g., a coordinate system that is anchored to a fixed location and / or object in the physical environment) in order to determine the position at which to display an environment-locked virtual object in the viewpoint of the user. An environment-locked virtual object can be locked to a stationary part of the environment (e.g., a floor, wall, table, or other stationary object) or can be locked to a moveable part of the environment (e.g., a vehicle, animal, person, or even a representation of portion of the users body that moves independently of a viewpoint of the user, such as a user’s hand, wrist, arm, or foot) so that the virtual object is moved as the viewpoint or the portion of the environment moves to maintain a fixed relationship between the virtual object and the portion of the environment.

[0061] In some embodiments a virtual object that is environment-locked or viewpoint- locked exhibits lazy follow behavior which reduces or delays motion of the environment-locked or viewpoint-locked virtual object relative to movement of a point of reference which the virtual object is following. In some embodiments, when exhibiting lazy follow behavior the computer system intentionally delays movement of the virtual object when detecting movement of a point of reference (e.g., a portion of the environment, the viewpoint, or a point that is fixed relative tothe viewpoint, such as a point that is between 5-300cm from the viewpoint) which the virtual object is following. For example, when the point of reference (e.g., the portion of the environement or the viewpoint) moves with a first speed, the virtual object is moved by the device to remain locked to the point of reference but moves with a second speed that is slower than the first speed (e.g., until the point of reference stops moving or slows down, at which point the virtual object starts to catch up to the point of reference). In some embodiments, when a virtual object exhibits lazy follow behavior the device ignores small amounts of movment of the point of reference (e.g., ignoring movement of the point of reference that is below a threshold amount of movement such as movement by 0-5 degrees or movement by 0-50 cm). For example, when the point of reference (e.g., the portion of the environment or the viewpoint to which the virtual object is locked) moves by a first amount, a distance between the point of reference and the virtual object increases (e.g., because the virtual object is being displayed so as to maintain a fixed or substantially fixed position relative to a viewpoint or portion of the environment that is different from the point of reference to which the virtual object is locked) and when the point of reference (e.g., the portion of the environment or the viewpoint to which the virtual object is locked) moves by a second amount that is greater than the first amount, a distance between the point of reference and the virtual object initially increases (e.g., because the virtual object is being displayed so as to maintain a fixed or substantially fixed position relative to a viewpoint or portion of the environment that is different from the point of reference to which the virtual object is locked) and then decreases as the amount of movement of the point of reference increases above a threshold (e.g., a “lazy follow” threshold) because the virtual object is moved by the computer system to maintain a fixed or substantially fixed position relative to the point of reference. In some embodiments the virtual object maintaining a substantially fixed position relative to the point of reference includes the virtual object being displayed within a threshold distance (e.g., 1, 2, 3, 5, 15, 20, 50 cm) of the point of reference in one or more dimensions (e.g., up / down, left / right, and / or forward / backward relative to the position of the point of reference).

[0062] Hardware: There are many different types of electronic systems that enable a person to sense and / or interact with various XR environments. Examples include head-mounted systems, projection-based systems, heads-up displays (HUDs), vehicle windshields having integrated display capability, windows having integrated display capability, displays formed as lenses designed to be placed on a person’s eyes (e.g., similar to contact lenses), headphones / earphones, speaker arrays, input systems (e.g., wearable or handheld controllers with or without haptic feedback), smartphones, tablets, and desktop / laptop computers. A head-mounted system may have one or more speaker(s) and an integrated opaque display. Alternatively, a head-mounted system may be configured to accept an external opaque display (e.g., a smartphone). The head-mounted system may incorporate one or more imaging sensors to capture images or video of the physical environment, and / or one or more microphones to capture audio of the physical environment. Rather than an opaque display, a head-mounted system may have a transparent or translucent display. The transparent or translucent display may have a medium through which light representative of images is directed to a person’s eyes. The display may utilize digital light projection, OLEDs, LEDs, uLEDs, liquid crystal on silicon, laser scanning light source, or any combination of these technologies. The medium may be an optical waveguide, a hologram medium, an optical combiner, an optical reflector, or any combination thereof. In one embodiment, the transparent or translucent display may be configured to become opaque selectively. Projection-based systems may employ retinal projection technology that projects graphical images onto a person’s retina. Projection systems also may be configured to project virtual objects into the physical environment, for example, as a hologram or on a physical surface. In some embodiments, the controller 110 is configured to manage and coordinate a XR experience for the user. In some embodiments, the controller 110 includes a suitable combination of software, firmware, and / or hardware. The controller 110 is described in greater detail below with respect to Figure 2. In some embodiments, the controller 110 is a computing device that is local or remote relative to the scene 105 (e.g., a physical environment). For example, the controller 110 is a local server located within the scene 105. In another example, the controller 110 is a remote server located outside of the scene 105 (e.g., a cloud server, central server, etc.). In some embodiments, the controller 110 is communicatively coupled with the display generation component 120 (e.g., an HMD, a display, a projector, a touch-screen, etc.) via one or more wired or wireless communication channels 144 (e.g., BLUETOOTH, IEEE 802.1 lx, IEEE 802.16x, IEEE 802.3x, etc.). In another example, the controller 110 is included within the enclosure (e.g., a physical housing) of the display generation component 120 (e.g., an HMD, or a portable electronic device that includes a display and one or more processors, etc.), one or more of the input devices 125, one or more of the output devices 155, one or more of the sensors 190, and / or one or more of the peripheral devices 195, or share the same physical enclosure or support structure with one or more of the above.

[0063] In some embodiments, the display generation component 120 is configured to provide the XR experience (e.g., at least a visual component of the XR experience) to the user. In some embodiments, the display generation component 120 includes a suitable combination ofsoftware, firmware, and / or hardware. The display generation component 120 is described in greater detail below with respect to Figure 3A. In some embodiments, the functionalities of the controller 110 are provided by and / or combined with the display generation component 120.

[0064] According to some embodiments, the display generation component 120 provides an XR experience to the user while the user is virtually and / or physically present within the scene 105.

[0065] In some embodiments, the display generation component is worn on a part of the user’s body (e.g., on his / her head, on his / her hand, etc.). As such, the display generation component 120 includes one or more XR displays provided to display the XR content. For example, in various embodiments, the display generation component 120 encloses the field-of- view of the user. In some embodiments, the display generation component 120 is a handheld device (such as a smartphone or tablet) configured to present XR content, and the user holds the device with a display directed towards the field-of-view of the user and a camera directed towards the scene 105. In some embodiments, the handheld device is optionally placed within an enclosure that is worn on the head of the user. In some embodiments, the handheld device is optionally placed on a support (e.g., a tripod) in front of the user. In some embodiments, the display generation component 120 is a XR chamber, enclosure, or room configured to present XR content in which the user does not wear or hold the display generation component 120. Many user interfaces described with reference to one type of hardware for displaying XR content (e.g., a handheld device or a device on a tripod) could be implemented on another type of hardware for displaying XR content (e.g., an HMD or other wearable computing device). For example, a user interface showing interactions with XR content triggered based on interactions that happen in a space in front of a handheld or tripod mounted device could similarly be implemented with an HMD where the interactions happen in a space in front of the HMD and the responses of the XR content are displayed via the HMD. Similarly, a user interface showing interactions with XR content triggered based on movement of a handheld or tripod mounted device relative to the physical environment (e.g., the scene 105 or a part of the user’s body (e.g., the user’s eye(s), head, or hand)) could similarly be implemented with an HMD where the movement is caused by movement of the HMD relative to the physical environment (e.g., the scene 105 or a part of the user’s body (e.g., the user’s eye(s), head, or hand)).

[0066] While pertinent features of the operating environment 100 are shown in Figure 1 A, those of ordinary skill in the art will appreciate from the present disclosure that various otherfeatures have not been illustrated for the sake of brevity and so as not to obscure more pertinent aspects of the example embodiments disclosed herein.

[0067] Figures 1 A-1P illustrate various examples of a computer system that is used to perform the methods and provide audio, visual and / or haptic feedback as part of user interfaces described herein. In some embodiments, the computer system includes one or more display generation components (e.g., first and second display assemblies l-120a, l-120b and / or first and second optical modules 11.1. l-104a and 11.1. l-104b) for displaying virtual elements and / or a representation of a physical environment to a user of the computer system, optionally generated based on detected events and / or user inputs detected by the computer system. User interfaces generated by the computer system are optionally corrected by one or more corrective lenses 11.3.2-216 that are optionally removably attached to one or more of the optical modules to enable the user interfaces to be more easily viewed by users who would otherwise use glasses or contacts to correct their vision. While many user interfaces illustrated herein show a single view of a user interface, user interfaces in a HMD are optionally displayed using two optical modules (e.g., first and second display assemblies l-120a, l-120b and / or first and second optical modules 11.1.1-104a and 11.1.1-104b), one for a user’ s right eye and a different one for a user’ s left eye, and slightly different images are presented to the two different eyes to generate the illusion of stereoscopic depth, the single view of the user interface would typically be either a right-eye or left-eye view and the depth effect is explained in the text or using other schematic charts or views. In some embodiments, the computer system includes one or more external displays (e.g., display assembly 1-108) for displaying status information for the computer system to the user of the computer system (when the computer system is not being worn) and / or to other people who are near the computer system, optionally generated based on detected events and / or user inputs detected by the computer system. In some embodiments, the computer system includes one or more audio output components (e.g., electronic component 1-112) for generating audio feedback, optionally generated based on detected events and / or user inputs detected by the computer system. In some embodiments, the computer system includes one or more input devices for detecting input such as one or more sensors (e.g., one or more sensors in sensor assembly 1-356, and / or Figure II) for detecting information about a physical environment of the device which can be used (optionally in conjunction with one or more illuminators such as the illuminators described in Figure II) to generate a digital passthrough image, capture visual media corresponding to the physical environment (e.g., photos and / or video), or determine a pose (e.g., position and / or orientation) of physical objects and / or surfaces in the physical environment sothat virtual objects ban be placed based on a detected pose of physical objects and / or surfaces. In some embodiments, the computer system includes one or more input devices for detecting input such as one or more sensors for detecting hand position and / or movement (e.g., one or more sensors in sensor assembly 1-356, and / or Figure II) that can be used (optionally in conjunction with one or more illuminators such as the illuminators 6-124 described in Figure II) to determine when one or more air gestures have been performed. In some embodiments, the computer system includes one or more input devices for detecting input such as one or more sensors for detecting eye movement (e.g., eye tracking and gaze tracking sensors in Figure II) which can be used (optionally in conjunction with one or more lights such as lights 11.3.2-110 in Figure 10) to determine attention or gaze position and / or gaze movement which can optionally be used to detect gaze-only inputs based on gaze movement and / or dwell. A combination of the various sensors described above can be used to determine user facial expressions and / or hand movements for use in generating an avatar or representation of the user such as an anthropomorphic avatar or representation for use in a real-time communication session where the avatar has facial expressions, hand movements, and / or body movements that are based on or similar to detected facial expressions, hand movements, and / or body movements of a user of the device. Gaze and / or attention information is, optionally, combined with hand tracking information to determine interactions between the user and one or more user interfaces based on direct and / or indirect inputs such as air gestures or inputs that use one or more hardware input devices such as one or more buttons (e.g., first button 1-128, button 11.1.1-114, second button 1- 132, and or dial or button 1-328), knobs (e.g., first button 1-128, button 11.1.1-114, and / or dial or button 1-328), digital crowns (e.g., first button 1-128 which is depressible and twistable or rotatable, button 11.1.1-114, and / or dial or button 1-328), trackpads, touch screens, keyboards, mice and / or other input devices. One or more buttons (e.g., first button 1-128, button 11.1.1-114, second button 1-132, and or dial or button 1-328) are optionally used to perform system operations such as recentering content in three-dimensional environment that is visible to a user of the device, displaying a home user interface for launching applications, starting real-time communication sessions, or initiating display of virtual three-dimensional backgrounds. Knobs or digital crowns (e.g., first button 1-128 which is depressible and twistable or rotatable, button 11.1.1-114, and / or dial or button 1-328) are optionally rotatable to adjust parameters of the visual content such as a level of immersion of a virtual three-dimensional environment (e.g., a degree to which virtual-content occupies the viewport of the user into the three-dimensional environment) or other parameters associated with the three-dimensional environment and the virtual contentthat is displayed via the optical modules (e.g., first and second display assemblies l-120a, 1- 120b and / or first and second optical modules 11. l.l-104a and 11.1. l-104b).

[0068] FIG. IB illustrates a front, top, perspective view of an example of a head- mountable display (HMD) device 1-100 configured to be donned by a user and provide virtual and altered / mixed reality (VR / AR) experiences. The HMD 1-100 can include a display unit 1- 102 or assembly, an electronic strap assembly 1-104 connected to and extending from the display unit 1-102, and a band assembly 1-106 secured at either end to the electronic strap assembly 1- 104. The electronic strap assembly 1-104 and the band 1-106 can be part of a retention assembly configured to wrap around a user’s head to hold the display unit 1-102 against the face of the user.

[0069] In at least one example, the band assembly 1-106 can include a first band 1-116 configured to wrap around the rear side of a user’s head and a second band 1-117 configured to extend over the top of a user’s head. The second strap can extend between first and second electronic straps l-105a, 1 -105b of the electronic strap assembly 1-104 as shown. The strap assembly 1-104 and the band assembly 1-106 can be part of a securement mechanism extending rearward from the display unit 1-102 and configured to hold the display unit 1-102 against a face of a user.

[0070] In at least one example, the securement mechanism includes a first electronic strap l-105a including a first proximal end 1-134 coupled to the display unit 1-102, for example a housing 1-150 of the display unit 1-102, and a first distal end 1-136 opposite the first proximal end 1-134. The securement mechanism can also include a second electronic strap 1 - 105b including a second proximal end 1-138 coupled to the housing 1-150 of the display unit 1-102 and a second distal end 1-140 opposite the second proximal end 1-138. The securement mechanism can also include the first band 1-116 including a first end 1-142 coupled to the first distal end 1-136 and a second end 1-144 coupled to the second distal end 1-140 and the second band 1-117 extending between the first electronic strap l-105a and the second electronic strap 1- 105b. The straps l-105a-b and band 1-116 can be coupled via connection mechanisms or assemblies 1-114. In at least one example, the second band 1-117 includes a first end 1-146 coupled to the first electronic strap l-105a between the first proximal end 1-134 and the first distal end 1-136 and a second end 1-148 coupled to the second electronic strap 1 - 105b between the second proximal end 1-138 and the second distal end 1-140.

[0071] In at least one example, the first and second electronic straps l-105a-b include plastic, metal, or other structural materials forming the shape the substantially rigid straps 1- 105a-b. In at least one example, the first and second bands 1-116, 1-117 are formed of elastic, flexible materials including woven textiles, rubbers, and the like. The first and second bands 1- 116, 1-117 can be flexible to conform to the shape of the user’ head when donning the HMD 1- 100.

[0072] In at least one example, one or more of the first and second electronic straps 1- 105a-b can define internal strap volumes and include one or more electronic components disposed in the internal strap volumes. In one example, as shown in FIG. IB, the first electronic strap l-105a can include an electronic component 1-112. In one example, the electronic component 1-112 can include a speaker. In one example, the electronic component 1-112 can include a computing component such as a processor.

[0073] In at least one example, the housing 1-150 defines a first, front-facing opening 1- 152. The front-facing opening is labeled in dotted lines at 1-152 in FIG. IB because the display assembly 1-108 is disposed to occlude the first opening 1-152 from view when the HMD 1-100 is assembled. The housing 1-150 can also define a rear-facing second opening 1-154. The housing 1-150 also defines an internal volume between the first and second openings 1-152, 1- 154. In at least one example, the HMD 1-100 includes the display assembly 1-108, which can include a front cover and display screen (shown in other figures) disposed in or across the front opening 1-152 to occlude the front opening 1-152. In at least one example, the display screen of the display assembly 1-108, as well as the display assembly 1-108 in general, has a curvature configured to follow the curvature of a user’s face. The display screen of the display assembly 1- 108 can be curved as shown to compliment the user’s facial features and general curvature from one side of the face to the other, for example from left to right and / or from top to bottom where the display unit 1-102 is pressed.

[0074] In at least one example, the housing 1-150 can define a first aperture 1-126 between the first and second openings 1-152, 1-154 and a second aperture 1-130 between the first and second openings 1-152, 1-154. The HMD 1-100 can also include a first button 1-128 disposed in the first aperture 1-126 and a second button 1-132 disposed in the second aperture 1- 130. The first and second buttons 1-128, 1-132 can be depressible through the respective apertures 1-126, 1-130. In at least one example, the first button 1-126 and / or second button 1- 132 can be twistable dials as well as depressible buttons. In at least one example, the first button1-128 is a depressible and twistable dial button and the second button 1-132 is a depressible button.

[0075] FIG. 1C illustrates a rear, perspective view of the HMD 1-100. The HMD 1-100 can include a light seal 1-110 extending rearward from the housing 1-150 of the display assembly 1-108 around a perimeter of the housing 1-150 as shown. The light seal 1-110 can be configured to extend from the housing 1-150 to the user’s face around the user’s eyes to block external light from being visible. In one example, the HMD 1-100 can include first and second display assemblies l-120a, l-120b disposed at or in the rearward facing second opening 1-154 defined by the housing 1-150 and / or disposed in the internal volume of the housing 1-150 and configured to project light through the second opening 1-154. In at least one example, each display assembly l-120a-b can include respective display screens l-122a, l-122b configured to project light in a rearward direction through the second opening 1-154 toward the user’s eyes.

[0076] In at least one example, referring to both FIGS. IB and 1C, the display assembly 1-108 can be a front-facing, forward display assembly including a display screen configured to project light in a first, forward direction and the rear facing display screens l-122a-b can be configured to project light in a second, rearward direction opposite the first direction. As noted above, the light seal 1-110 can be configured to block light external to the HMD 1-100 from reaching the user’s eyes, including light projected by the forward facing display screen of the display assembly 1-108 shown in the front perspective view of FIG. IB. In at least one example, the HMD 1-100 can also include a curtain 1-124 occluding the second opening 1-154 between the housing 1-150 and the rear-facing display assemblies l-120a-b. In at least one example, the curtain 1-124 can be elastic or at least partially elastic.

[0077] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIGS. IB and 1C can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. ID - IF and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. ID - IF can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIGS. IB and 1C.

[0078] FIG. ID illustrates an exploded view of an example of an HMD 1-200 including various portions or parts thereof separated according to the modularity and selective coupling of those parts. For example, the HMD 1-200 can include a band 1-216 which can be selectivelycoupled to first and second electronic straps l-205a, l-205b. The first securement strap l-205a can include a first electronic component 1-212a and the second securement strap l-205b can include a second electronic component 1-212b. In at least one example, the first and second straps l-205a-b can be removably coupled to the display unit 1-202.

[0079] In addition, the HMD 1-200 can include a light seal 1-210 configured to be removably coupled to the display unit 1-202. The HMD 1-200 can also include lenses 1-218 which can be removably coupled to the display unit 1-202, for example over first and second display assemblies including display screens. The lenses 1-218 can include customized prescription lenses configured for corrective vision. As noted, each part shown in the exploded view of FIG. ID and described above can be removably coupled, attached, re-attached, and changed out to update parts or swap out parts for different users. For example, bands such as the band 1-216, light seals such as the light seal 1-210, lenses such as the lenses 1-218, and electronic straps such as the straps l-205a-b can be swapped out depending on the user such that these parts are customized to fit and correspond to the individual user of the HMD 1-200.

[0080] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. ID can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. IB, 1C, and IE - IF and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. IB, 1C, and IE - IF can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. ID.

[0081] FIG. IE illustrates an exploded view of an example of a display unit 1-306 of a HMD. The display unit 1-306 can include a front display assembly 1-308, a frame / housing assembly 1-350, and a curtain assembly 1-324. The display unit 1-306 can also include a sensor assembly 1-356, logic board assembly 1-358, and cooling assembly 1-360 disposed between the frame assembly 1-350 and the front display assembly 1-308. In at least one example, the display unit 1-306 can also include a rear-facing display assembly 1-320 including first and second rearfacing display screens l-322a, l-322b disposed between the frame 1-350 and the curtain assembly 1-324.

[0082] In at least one example, the display unit 1-306 can also include a motor assembly 1-362 configured as an adjustment mechanism for adjusting the positions of the display screens l-322a-b of the display assembly 1-320 relative to the frame 1-350. In at least one example, thedisplay assembly 1-320 is mechanically coupled to the motor assembly 1-362, with at least one motor for each display screen l-322a-b, such that the motors can translate the display screens 1- 322a-b to match an interpupillary distance of the user’s eyes.

[0083] In at least one example, the display unit 1-306 can include a dial or button 1-328 depressible relative to the frame 1-350 and accessible to the user outside the frame 1-350. The button 1-328 can be electronically connected to the motor assembly 1-362 via a controller such that the button 1-328 can be manipulated by the user to cause the motors of the motor assembly 1-362 to adjust the positions of the display screens l-322a-b.

[0084] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IE can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. IB - ID and IF and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. IB - ID and IF can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IE.

[0085] FIG. IF illustrates an exploded view of another example of a display unit 1-406 of a HMD device similar to other HMD devices described herein. The display unit 1-406 can include a front display assembly 1-402, a sensor assembly 1-456, a logic board assembly 1-458, a cooling assembly 1-460, a frame assembly 1-450, a rear-facing display assembly 1-421, and a curtain assembly 1-424. The display unit 1-406 can also include a motor assembly 1-462 for adjusting the positions of first and second display sub-assemblies l-420a, l-420b of the rearfacing display assembly 1-421, including first and second respective display screens for interpupillary adjustments, as described above.

[0086] The various parts, systems, and assemblies shown in the exploded view of FIG. IF are described in greater detail herein with reference to FIGS. IB - IE as well as subsequent figures referenced in the present disclosure. The display unit 1-406 shown in FIG. IF can be assembled and integrated with the securement mechanisms shown in FIGS. IB - IE, including the electronic straps, bands, and other components including light seals, connection assemblies, and so forth.

[0087] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IF can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. IB - IEand described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. IB - IE can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IF.

[0088] Figure 1G illustrates a perspective, exploded view of a front cover assembly 3- 100 of an HMD device described herein, for example the front cover assembly 3-1 of the HMD 3-100 shown in FIG. 1G or any other HMD device shown and described herein. The front cover assembly 3-100 shown in FIG. 1G can include a transparent or semi-transparent cover 3-102, shroud 3-104 (or “canopy”), adhesive layers 3-106, display assembly 3-108 including a lenticular lens panel or array 3-110, and a structural trim 3-112. The adhesive layer 3-106 can secure the shroud 3-104 and / or transparent cover 3-102 to the display assembly 3-108 and / or the trim 3-112. The trim 3-112 can secure the various components of the front cover assembly 3-100 to a frame or chassis of the HMD device.

[0089] In at least one example, as shown in FIG. 1G, the transparent cover 3-102, shroud 3-104, and display assembly 3-108, including the lenticular lens array 3-110, can be curved to accommodate the curvature of a user’s face. The transparent cover 3-102 and the shroud 3-104 can be curved in two or three dimensions, e.g., vertically curved in the Z-direction in and out of the Z-X plane and horizontally curved in the X-direction in and out of the Z-X plane. In at least one example, the display assembly 3-108 can include the lenticular lens array 3-110 as well as a display panel having pixels configured to project light through the shroud 3-104 and the transparent cover 3-102. The display assembly 3-108 can be curved in at least one direction, for example the horizontal direction, to accommodate the curvature of a user’s face from one side (e.g., left side) of the face to the other (e.g., right side). In at least one example, each layer or component of the display assembly 3-108, which will be shown in subsequent figures and described in more detail, but which can include the lenticular lens array 3-110 and a display layer, can be similarly or concentrically curved in the horizontal direction to accommodate the curvature of the user’s face.

[0090] In at least one example, the shroud 3-104 can include a transparent or semitransparent material through which the display assembly 3-108 projects light. In one example, the shroud 3-104 can include one or more opaque portions, for example opaque ink-printed portions or other opaque film portions on the rear surface of the shroud 3-104. The rear surface can be the surface of the shroud 3-104 facing the user’s eyes when the HMD device is donned. In at least one example, opaque portions can be on the front surface of the shroud 3-104 oppositethe rear surface. In at least one example, the opaque portion or portions of the shroud 3-104 can include perimeter portions visually hiding any components around an outside perimeter of the display screen of the display assembly 3-108. In this way, the opaque portions of the shroud hide any other components, including electronic components, structural components, and so forth, of the HMD device that would otherwise be visible through the transparent or semi-transparent cover 3-102 and / or shroud 3-104.

[0091] In at least one example, the shroud 3-104 can define one or more apertures transparent portions 3-120 through which sensors can send and receive signals. In one example, the portions 3-120 are apertures through which the sensors can extend or send and receive signals. In one example, the portions 3-120 are transparent portions, or portions more transparent than surrounding semi-transparent or opaque portions of the shroud, through which sensors can send and receive signals through the shroud and through the transparent cover 3-102. In one example, the sensors can include cameras, IR sensors, LUX sensors, or any other visual or nonvisual environmental sensors of the HMD device.

[0092] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. 1G can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts described herein.Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described herein can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. 1G.

[0093] FIG. 1H illustrates an exploded view of an example of an HMD device 6-100. The HMD device 6-100 can include a sensor array or system 6-102 including one or more sensors, cameras, projectors, and so forth mounted to one or more components of the HMD 6- 100. In at least one example, the sensor system 6-102 can include a bracket 1-338 on which one or more sensors of the sensor system 6-102 can be fixed / secured.

[0094] FIG. II illustrates a portion of an HMD device 6-100 including a front transparent cover 6-104 and a sensor system 6-102. The sensor system 6-102 can include a number of different sensors, emitters, receivers, including cameras, IR sensors, projectors, and so forth. The transparent cover 6-104 is illustrated in front of the sensor system 6-102 to illustrate relative positions of the various sensors and emitters as well as the orientation of each sensor / emitter of the system 6-102. As referenced herein, “sideways,” “side,” “lateral,” “horizontal,” and other similar terms refer to orientations or directions as indicated by the X-axis shown in FIG. 1 J.Terms such as “vertical,” “up,” “down,” and similar terms refer to orientations or directions as indicated by the Z-axis shown in FIG. 1 J. Terms such as “frontward,” “rearward,” “forward,” backward,” and similar terms refer to orientations or directions as indicated by the Y-axis shown in FIG. 1J.

[0095] In at least one example, the transparent cover 6-104 can define a front, external surface of the HMD device 6-100 and the sensor system 6-102, including the various sensors and components thereof, can be disposed behind the cover 6-104 in the Y-axis / direction. The cover 6-104 can be transparent or semi-transparent to allow light to pass through the cover 6-104, both light detected by the sensor system 6-102 and light emitted thereby.

[0096] As noted elsewhere herein, the HMD device 6-100 can include one or more controllers including processors for electrically coupling the various sensors and emitters of the sensor system 6-102 with one or more mother boards, processing units, and other electronic devices such as display screens and the like. In addition, as will be shown in more detail below with reference to other figures, the various sensors, emitters, and other components of the sensor system 6-102 can be coupled to various structural frame members, brackets, and so forth of the HMD device 6-100 not shown in FIG. II. FIG. II shows the components of the sensor system 6- 102 unattached and un-coupled electrically from other components for the sake of illustrative clarity.

[0097] In at least one example, the device can include one or more controllers having processors configured to execute instructions stored on memory components electrically coupled to the processors. The instructions can include, or cause the processor to execute, one or more algorithms for self-correcting angles and positions of the various cameras described herein overtime with use as the initial positions, angles, or orientations of the cameras get bumped or deformed due to unintended drop events or other events.

[0098] In at least one example, the sensor system 6-102 can include one or more scene cameras 6-106. The system 6-102 can include two scene cameras 6-102 disposed on either side of the nasal bridge or arch of the HMD device 6-100 such that each of the two cameras 6-106 correspond generally in position with left and right eyes of the user behind the cover 6-103. In at least one example, the scene cameras 6-106 are oriented generally forward in the Y-direction to capture images in front of the user during use of the HMD 6-100. In at least one example, the scene cameras are color cameras and provide images and content for MR video pass through tothe display screens facing the user’s eyes when using the HMD device 6-100. The scene cameras 6-106 can also be used for environment and object reconstruction.

[0099] In at least one example, the sensor system 6-102 can include a first depth sensor 6-108 pointed generally forward in the Y-direction. In at least one example, the first depth sensor 6-108 can be used for environment and object reconstruction as well as user hand and body tracking. In at least one example, the sensor system 6-102 can include a second depth sensor 6- 110 disposed centrally along the width (e.g., along the X-axis) of the HMD device 6-100. For example, the second depth sensor 6-110 can be disposed above the central nasal bridge or accommodating features over the nose of the user when donning the HMD 6-100. In at least one example, the second depth sensor 6-110 can be used for environment and object reconstruction as well as hand and body tracking. In at least one example, the second depth sensor can include a LIDAR sensor.

[0100] In at least one example, the sensor system 6-102 can include a depth projector 6- 112 facing generally forward to project electromagnetic waves, for example in the form of a predetermined pattern of light dots, out into and within a field of view of the user and / or the scene cameras 6-106 or a field of view including and beyond the field of view of the user and / or scene cameras 6-106. In at least one example, the depth projector can project electromagnetic waves of light in the form of a dotted light pattern to be reflected off objects and back into the depth sensors noted above, including the depth sensors 6-108, 6-110. In at least one example, the depth projector 6-112 can be used for environment and object reconstruction as well as hand and body tracking.

[0101] In at least one example, the sensor system 6-102 can include downward facing cameras 6-114 with a field of view pointed generally downward relative to the HDM device 6- 100 in the Z-axis. In at least one example, the downward cameras 6-114 can be disposed on left and right sides of the HMD device 6-100 as shown and used for hand and body tracking, headset tracking, and facial avatar detection and creation for display a user avatar on the forward facing display screen of the HMD device 6-100 described elsewhere herein. The downward cameras 6- 114, for example, can be used to capture facial expressions and movements for the face of the user below the HMD device 6-100, including the cheeks, mouth, and chin.

[0102] In at least one example, the sensor system 6-102 can include jaw cameras 6-116. In at least one example, the jaw cameras 6-116 can be disposed on left and right sides of the HMD device 6-100 as shown and used for hand and body tracking, headset tracking, and facialavatar detection and creation for display a user avatar on the forward facing display screen of the HMD device 6-100 described elsewhere herein. The jaw cameras 6-116, for example, can be used to capture facial expressions and movements for the face of the user below the HMD device 6-100, including the user’s jaw, cheeks, mouth, and chin, for hand and body tracking, headset tracking, and facial avatar

[0103] In at least one example, the sensor system 6-102 can include side cameras 6-118. The side cameras 6-118 can be oriented to capture side views left and right in the X-axis or direction relative to the HMD device 6-100. In at least one example, the side cameras 6-118 can be used for hand and body tracking, headset tracking, and facial avatar detection and re-creation.

[0104] In at least one example, the sensor system 6-102 can include a plurality of eye tracking and gaze tracking sensors for determining an identity, status, and gaze direction of a user’s eyes during and / or before use. In at least one example, the eye / gaze tracking sensors can include nasal eye cameras 6-120 disposed on either side of the user’s nose and adjacent the user’s nose when donning the HMD device 6-100. The eye / gaze sensors can also include bottom eye cameras 6-122 disposed below respective user eyes for capturing images of the eyes for facial avatar detection and creation, gaze tracking, and iris identification functions.

[0105] In at least one example, the sensor system 6-102 can include infrared illuminators 6-124 pointed outward from the HMD device 6-100 to illuminate the external environment and any object therein with IR light for IR detection with one or more IR sensors of the sensor system 6-102. In at least one example, the sensor system 6-102 can include a flicker sensor 6- 126 and an ambient light sensor 6-128. In at least one example, the flicker sensor 6-126 can detect overhead light refresh rates to avoid display flicker. In one example, the infrared illuminators 6-124 can include light emitting diodes and can be used especially for low light environments for illuminating user hands and other objects in low light for detection by infrared sensors of the sensor system 6-102.

[0106] In at least one example, multiple sensors, including the scene cameras 6-106, the downward cameras 6-114, the jaw cameras 6-116, the side cameras 6-118, the depth projector 6- 112, and the depth sensors 6-108, 6-110 can be used in combination with an electrically coupled controller to combine depth data with camera data for hand tracking and for size determination for better hand tracking and object recognition and tracking functions of the HMD device 6-100. In at least one example, the downward cameras 6-114, jaw cameras 6-116, and side cameras 6- 118 described above and shown in FIG. II can be wide angle cameras operable in the visible andinfrared spectrums. In at least one example, these cameras 6-114, 6-116, 6-118 can operate only in black and white light detection to simplify image processing and gain sensitivity.

[0107] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. II can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. 1 J - IL and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. 1 J - IL can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. II.

[0108] FIG. 1 J illustrates a lower perspective view of an example of an HMD 6-200 including a cover or shroud 6-204 secured to a frame 6-230. In at least one example, the sensors 6-203 of the sensor system 6-202 can be disposed around a perimeter of the HDM 6-200 such that the sensors 6-203 are outwardly disposed around a perimeter of a display region or area 6- 232 so as not to obstruct a view of the displayed light. In at least one example, the sensors can be disposed behind the shroud 6-204 and aligned with transparent portions of the shroud allowing sensors and projectors to allow light back and forth through the shroud 6-204. In at least one example, opaque ink or other opaque material or films / layers can be disposed on the shroud 6- 204 around the display area 6-232 to hide components of the HMD 6-200 outside the display area 6-232 other than the transparent portions defined by the opaque portions, through which the sensors and projectors send and receive light and electromagnetic signals during operation. In at least one example, the shroud 6-204 allows light to pass therethrough from the display (e.g., within the display region 6-232) but not radially outward from the display region around the perimeter of the display and shroud 6-204.

[0109] In some examples, the shroud 6-204 includes a transparent portion 6-205 and an opaque portion 6-207, as described above and elsewhere herein. In at least one example, the opaque portion 6-207 of the shroud 6-204 can define one or more transparent regions 6-209 through which the sensors 6-203 of the sensor system 6-202 can send and receive signals. In the illustrated example, the sensors 6-203 of the sensor system 6-202 sending and receiving signals through the shroud 6-204, or more specifically through the transparent regions 6-209 of the (or defined by) the opaque portion 6-207 of the shroud 6-204 can include the same or similar sensors as those shown in the example of FIG. II, for example depth sensors 6-108 and 6-110, depth projector 6-112, first and second scene cameras 6-106, first and second downward cameras 6- 114, first and second side cameras 6-118, and first and second infrared illuminators 6-124. Thesesensors are also shown in the examples of FIGS. IK and IL. Other sensors, sensor types, number of sensors, and relative positions thereof can be included in one or more other examples of HMDs.

[0110] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. 1 J can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. II and IK- IL and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. II and IK- IL can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. 1 J.[OHl] FIG. IK illustrates a front view of a portion of an example of an HMD device 6- 300 including a display 6-334, brackets 6-336, 6-338, and frame or housing 6-330. The example shown in FIG. IK does not include a front cover or shroud in order to illustrate the brackets 6- 336, 6-338. For example, the shroud 6-204 shown in FIG. 1 J includes the opaque portion 6-207 that would visually cover / block a view of anything outside (e.g., radially / peripherally outside) the di splay / di splay region 6-334, including the sensors 6-303 and bracket 6-338.

[0112] In at least one example, the various sensors of the sensor system 6-302 are coupled to the brackets 6-336, 6-338. In at least one example, the scene cameras 6-306 include tight tolerances of angles relative to one another. For example, the tolerance of mounting angles between the two scene cameras 6-306 can be 0.5 degrees or less, for example 0.3 degrees or less. In order to achieve and maintain such a tight tolerance, in one example, the scene cameras 6-306 can be mounted to the bracket 6-338 and not the shroud. The bracket can include cantilevered arms on which the scene cameras 6-306 and other sensors of the sensor system 6-302 can be mounted to remain un-deformed in position and orientation in the case of a drop event by a user resulting in any deformation of the other bracket 6-226, housing 6-330, and / or shroud.

[0113] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IK can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. II - 1 J and IL and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. II - 1 J and IL can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IK.

[0114] FIG. IL illustrates a bottom view of an example of an HMD 6-400 including a front display / cover assembly 6-404 and a sensor system 6-402. The sensor system 6-402 can be similar to other sensor systems described above and elsewhere herein, including in reference to FIGS. II - IK. In at least one example, the jaw cameras 6-416 can be facing downward to capture images of the user’s lower facial features. In one example, the jaw cameras 6-416 can be coupled directly to the frame or housing 6-430 or one or more internal brackets directly coupled to the frame or housing 6-430 shown. The frame or housing 6-430 can include one or more apertures / openings 6-415 through which the jaw cameras 6-416 can send and receive signals.

[0115] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IL can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. II - IK and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. II - IK can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IL.

[0116] FIG. IM illustrates a rear perspective view of an inter-pupillary distance (IPD) adjustment system 11.1.1-102 including first and second optical modules 11.1. l-104a-b slidably engaging / coupled to respective guide-rods 11.1.1-108a-b and motors 11.1.1-11 Oa-b of left and right adjustment subsystems 11.1. l-106a-b. The IPD adjustment system 11.1.1-102 can be coupled to a bracket 11.1.1-112 and include a button 11.1.1-114 in electrical communication with the motors 11.1.1-11 Oa-b. In at least one example, the button 11.1.1-114 can electrically communicate with the first and second motors 11.1.1-11 Oa-b via a processor or other circuitry components to cause the first and second motors 11.1.1-1 lOa-b to activate and cause the first and second optical modules 11.1. l-104a-b, respectively, to change position relative to one another.

[0117] In at least one example, the first and second optical modules 11.1. l-104a-b can include respective display screens configured to project light toward the user’s eyes when donning the HMD 11.1.1-100. In at least one example, the user can manipulate (e.g., depress and / or rotate) the button 11.1.1-114 to activate a positional adjustment of the optical modules 11.1. l-104a-b to match the inter-pupillary distance of the user’s eyes. The optical modules 11.1. l-104a-b can also include one or more cameras or other sensors / sensor systems for imaging and measuring the IPD of the user such that the optical modules 11.1. l-104a-b can be adjusted to match the IPD.

[0118] In one example, the user can manipulate the button 11.1.1-114 to cause an automatic positional adjustment of the first and second optical modules 11.1. l-104a-b. In one example, the user can manipulate the button 11.1.1-114 to cause a manual adjustment such that the optical modules 11.1. l-104a-b move further or closer away, for example when the user rotates the button 11.1.1-114 one way or the other, until the user visually matches her / his own IPD. In one example, the manual adjustment is electronically communicated via one or more circuits and power for the movements of the optical modules 11.1. l-104a-b via the motors11.1.1-1 lOa-b is provided by an electrical power source. In one example, the adjustment and movement of the optical modules 11.1. l-104a-b via a manipulation of the button 11.1.1-114 is mechanically actuated via the movement of the button 11.1.1-114.

[0119] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IM can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in any other figures shown and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to any other figure shown and described herein, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IM.

[0120] FIG. IN illustrates a front perspective view of a portion of an HMD 11.1.2-100, including an outer structural frame 11.1.2-102 and an inner or intermediate structural frame11.1.2-104 defining first and second apertures 11.1.2-106a, 11.1.2-106b. The apertures 11.1.2- 106a-b are shown in dotted lines in FIG. IN because a view of the apertures 11.1.2-106a-b can be blocked by one or more other components of the HMD 11.1.2-100 coupled to the inner frame11.1.2-104 and / or the outer frame 11.1.2-102, as shown. In at least one example, the HMD11.1.2-100 can include a first mounting bracket 11.1.2-108 coupled to the inner frame 11.1.2- 104. In at least one example, the mounting bracket 11.1.2-108 is coupled to the inner frame11.1.2-104 between the first and second apertures 11.1.2-106a-b.

[0121] The mounting bracket 11.1.2-108 can include a middle or central portion 11.1.2- 109 coupled to the inner frame 11.1.2-104. In some examples, the middle or central portion11.1.2-109 may not be the geometric middle or center of the bracket 11.1.2-108. Rather, the middle / central portion 11.1.2-109 can be disposed between first and second cantilevered extension arms extending away from the middle portion 11.1.2-109. In at least one example, the mounting bracket 108 includes a first cantilever arm 11.1.2-112 and a second cantilever arm11.1.2-114 extending away from the middle portion 11.1.2-109 of the mount bracket 11.1.2-108 coupled to the inner frame 11.1.2-104.

[0122] As shown in FIG. IN, the outer frame 11.1.2-102 can define a curved geometry on a lower side thereof to accommodate a user’s nose when the user dons the HMD 11.1.2-100. The curved geometry can be referred to as a nose bridge 11.1.2-111 and be centrally located on a lower side of the HMD 11.1.2-100 as shown. In at least one example, the mounting bracket11.1.2-108 can be connected to the inner frame 11.1.2- 104 between the apertures 11.1.2-106a-b such that the cantilevered arms 11.1.2-112, 11.1.2-114 extend downward and laterally outward away from the middle portion 11.1.2-109 to compliment the nose bridge 11.1.2-111 geometry of the outer frame 11.1.2-102. In this way, the mounting bracket 11.1.2-108 is configured to accommodate the user’s nose as noted above. The nose bridge 11.1.2-111 geometry accommodates the nose in that the nose bridge 11.1.2-111 provides a curvature that curves with, above, over, and around the user’s nose for comfort and fit.

[0123] The first cantilever arm 11.1.2-112 can extend away from the middle portion11.1.2-109 of the mounting bracket 11.1.2-108 in a first direction and the second cantilever arm11.1.2-114 can extend away from the middle portion 11.1.2-109 of the mounting bracket 11.1.2- 10 in a second direction opposite the first direction. The first and second cantilever arms 11.1.2- 112, 11.1.2-114 are referred to as “cantilevered” or “cantilever” arms because each arm 11.1.2- 112, 11.1.2-114, includes a distal free end 11.1.2-116, 11.1.2-118, respectively, which are free of affixation from the inner and outer frames 11.1.2-102, 11.1.2-104. In this way, the arms 11.1.2- 112, 11.1.2-114 are cantilevered from the middle portion 11.1.2-109, which can be connected to the inner frame 11.1.2-104, with distal ends 11.1.2-102, 11.1.2-104 unattached.

[0124] In at least one example, the HMD 11.1.2-100 can include one or more components coupled to the mounting bracket 11.1.2-108. In one example, the components include a plurality of sensors 11.1.2-1 lOa-f. Each sensor of the plurality of sensors 11.1.2-1 lOa-f can include various types of sensors, including cameras, IR sensors, and so forth. In some examples, one or more of the sensors 11.1.2-1 lOa-f can be used for object recognition in three- dimensional space such that it is important to maintain a precise relative position of two or more of the plurality of sensors 11.1.2-1 lOa-f. The cantilevered nature of the mounting bracket 11.1.2- 108 can protect the sensors 11.1.2-1 lOa-f from damage and altered positioning in the case of accidental drops by the user. Because the sensors 11.1.2-1 lOa-f are cantilevered on the arms11.1.2-112, 11.1.2-114 of the mounting bracket 11.1.2-108, stresses and deformations of the inner and / or outer frames 11.1.2-104, 11.1.2-102 are not transferred to the cantilevered arms11.1.2-112, 11.1.2-114 and thus do not affect the relative positioning of the sensors 11.1.2-110a- f coupled / mounted to the mounting bracket 11.1.2-108.

[0125] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IN can be included, either alone or in any combination, in any of the other examples of devices, features, components, and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described herein can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IN.

[0126] FIG. 10 illustrates an example of an optical module 11.3.2-100 for use in an electronic device such as an HMD, including HDM devices described herein. As shown in one or more other examples described herein, the optical module 11.3.2-100 can be one of two optical modules within an HMD, with each optical module aligned to project light toward a user’s eye. In this way, a first optical module can project light via a display screen toward a user’s first eye and a second optical module of the same device can project light via another display screen toward the user’s second eye.

[0127] In at least one example, the optical module 11.3.2-100 can include an optical frame or housing 11.3.2-102, which can also be referred to as a barrel or optical module barrel. The optical module 11.3.2-100 can also include a display 11.3.2-104, including a display screen or multiple display screens, coupled to the housing 11.3.2-102. The display 11.3.2-104 can be coupled to the housing 11.3.2-102 such that the display 11.3.2-104 is configured to project light toward the eye of a user when the HMD of which the display module 11.3.2-100 is a part is donned during use. In at least one example, the housing 11.3.2-102 can surround the display11.3.2-104 and provide connection features for coupling other components of optical modules described herein.

[0128] In one example, the optical module 11.3.2-100 can include one or more cameras11.3.2-106 coupled to the housing 11.3.2-102. The camera 11.3.2-106 can be positioned relative to the display 11.3.2-104 and housing 11.3.2-102 such that the camera 11.3.2-106 is configured to capture one or more images of the user’s eye during use. In at least one example, the optical module 11.3.2-100 can also include a light strip 11.3.2-108 surrounding the display 11.3.2-104. In one example, the light strip 11.3.2-108 is disposed between the display 11.3.2-104 and the camera 11.3.2-106. The light strip 11.3.2-108 can include a plurality of lights 11.3.2-110. The plurality of lights can include one or more light emitting diodes (LEDs) or other lightsconfigured to project light toward the user’s eye when the HMD is donned. The individual lights11.3.2-110 of the light strip 11.3.2-108 can be spaced about the strip 11.3.2-108 and thus spaced about the display 11.3.2-104 uniformly or non-uniformly at various locations on the strip 11.3.2- 108 and around the display 11.3.2-104.

[0129] In at least one example, the housing 11.3.2-102 defines a viewing opening 11.3.2- 101 through which the user can view the display 11.3.2-104 when the HMD device is donned. In at least one example, the LEDs are configured and arranged to emit light through the viewing opening 11.3.2-101 and onto the user’s eye. In one example, the camera 11.3.2-106 is configured to capture one or more images of the user’s eye through the viewing opening 11.3.2-101.

[0130] As noted above, each of the components and features of the optical module11.3.2-100 shown in FIG. 10 can be replicated in another (e.g., second) optical module disposed with the HMD to interact (e.g., project light and capture images) of another eye of the user.

[0131] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. 10 can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts shown in FIGS. IP or otherwise described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described with reference to FIGS. IP or otherwise described herein can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. 10.

[0132] FIG. IP illustrates a cross-sectional view of an example of an optical module11.3.2-200 including a housing 11.3.2-202, display assembly 11.3.2-204 coupled to the housing11.3.2-202, and a lens 11.3.2-216 coupled to the housing 11.3.2-202. In at least one example, the housing 11.3.2-202 defines a first aperture or channel 11.3.2-212 and a second aperture or channel 11.3.2-214. The channels 11.3.2-212, 11.3.2-214 can be configured to slidably engage respective rails or guide rods of an HMD device to allow the optical module 11.3.2-200 to adjust in position relative to the user’s eyes for match the user’s interpapillary distance (IPD). The housing 11.3.2-202 can slidably engage the guide rods to secure the optical module 11.3.2-200 in place within the HMD.

[0133] In at least one example, the optical module 11.3.2-200 can also include a lens11.3.2-216 coupled to the housing 11.3.2-202 and disposed between the display assembly 11.3.2- 204 and the user’s eyes when the HMD is donned. The lens 11.3.2-216 can be configured to direct light from the display assembly 11.3.2-204 to the user’s eye. In at least one example, thelens 11.3.2-216 can be a part of a lens assembly including a corrective lens removably attached to the optical module 11.3.2-200. In at least one example, the lens 11.3.2-216 is disposed over the light strip 11.3.2-208 and the one or more eye-tracking cameras 11.3.2-206 such that the camera 11.3.2-206 is configured to capture images of the user’s eye through the lens 11.3.2-216 and the light strip 11.3.2-208 includes lights configured to project light through the lens 11.3.2- 216 to the users’ eye during use.

[0134] Any of the features, components, and / or parts, including the arrangements and configurations thereof shown in FIG. IP can be included, either alone or in any combination, in any of the other examples of devices, features, components, and parts and described herein. Likewise, any of the features, components, and / or parts, including the arrangements and configurations thereof shown and described herein can be included, either alone or in any combination, in the example of the devices, features, components, and parts shown in FIG. IP.

[0135] Figure 2 is a block diagram of an example of the controller 110 in accordance with some embodiments. While certain specific features are illustrated, those skilled in the art will appreciate from the present disclosure that various other features have not been illustrated for the sake of brevity, and so as not to obscure more pertinent aspects of the embodiments disclosed herein. To that end, as a non-limiting example, in some embodiments, the controller 110 includes one or more processing units 202 (e.g., microprocessors, application-specific integrated-circuits (ASICs), field-programmable gate arrays (FPGAs), graphics processing units (GPUs), central processing units (CPUs), processing cores, and / or the like), one or more input / output (I / O) devices 206, one or more communication interfaces 208 (e.g., universal serial bus (USB), FIREWIRE, THUNDERBOLT, IEEE 802.3x, IEEE 802.1 lx, IEEE 802.16x, global system for mobile communications (GSM), code division multiple access (CDMA), time division multiple access (TDMA), global positioning system (GPS), infrared (IR), BLUETOOTH, ZIGBEE, and / or the like type interface), one or more programming (e.g., I / O) interfaces 210, a memory 220, and one or more communication buses 204 for interconnecting these and various other components.

[0136] In some embodiments, the one or more communication buses 204 include circuitry that interconnects and controls communications between system components. In some embodiments, the one or more I / O devices 206 include at least one of a keyboard, a mouse, a touchpad, a joystick, one or more microphones, one or more speakers, one or more image sensors, one or more displays, and / or the like.

[0137] The memory 220 includes high-speed random-access memory, such as dynamic random-access memory (DRAM), static random-access memory (SRAM), double-data-rate random-access memory (DDR RAM), or other random-access solid-state memory devices. In some embodiments, the memory 220 includes non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other nonvolatile solid-state storage devices. The memory 220 optionally includes one or more storage devices remotely located from the one or more processing units 202. The memory 220 comprises a non-transitory computer readable storage medium. In some embodiments, the memory 220 or the non-transitory computer readable storage medium of the memory 220 stores the following programs, modules and data structures, or a subset thereof including an optional operating system 230 and a XR experience module 240.

[0138] The operating system 230 includes instructions for handling various basic system services and for performing hardware dependent tasks. In some embodiments, the XR experience module 240 is configured to manage and coordinate one or more XR experiences for one or more users (e.g., a single XR experience for one or more users, or multiple XR experiences for respective groups of one or more users). To that end, in various embodiments, the XR experience module 240 includes a data obtaining unit 241, a tracking unit 242, a coordination unit 246, and a data transmitting unit 248.

[0139] In some embodiments, the data obtaining unit 241 is configured to obtain data (e.g., presentation data, interaction data, sensor data, location data, etc.) from at least the display generation component 120 of Figure 1 A, and optionally one or more of the input devices 125, output devices 155, sensors 190, and / or peripheral devices 195. To that end, in various embodiments, the data obtaining unit 241 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0140] In some embodiments, the tracking unit 242 is configured to map the scene 105 and to track the position / location of at least the display generation component 120 with respect to the scene 105 of Figure 1 A, and optionally, to one or more of the input devices 125, output devices 155, sensors 190, and / or peripheral devices 195. To that end, in various embodiments, the tracking unit 242 includes instructions and / or logic therefor, and heuristics and metadata therefor. In some embodiments, the tracking unit 242 includes hand tracking unit 244 and / or eye tracking unit 243. In some embodiments, the hand tracking unit 244 is configured to track the position / location of one or more portions of the user’s hands, and / or motions of one or more portions of the user’s hands with respect to the scene 105 of Figure 1A, relative to the displaygeneration component 120, and / or relative to a coordinate system defined relative to the user’s hand. The hand tracking unit 244 is described in greater detail below with respect to Figure 4. In some embodiments, the eye tracking unit 243 is configured to track the position and movement of the user’s gaze (or more broadly, the user’s eyes, face, or head) with respect to the scene 105 (e.g., with respect to the physical environment and / or to the user (e.g., the user’s hand)) or with respect to the XR content displayed via the display generation component 120. The eye tracking unit 243 is described in greater detail below with respect to Figure 5.

[0141] In some embodiments, the coordination unit 246 is configured to manage and coordinate the XR experience presented to the user by the display generation component 120, and optionally, by one or more of the output devices 155 and / or peripheral devices 195. To that end, in various embodiments, the coordination unit 246 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0142] In some embodiments, the data transmitting unit 248 is configured to transmit data (e.g., presentation data, location data, etc.) to at least the display generation component 120, and optionally, to one or more of the input devices 125, output devices 155, sensors 190, and / or peripheral devices 195. To that end, in various embodiments, the data transmitting unit 248 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0143] Although the data obtaining unit 241, the tracking unit 242 (e.g., including the eye tracking unit 243 and the hand tracking unit 244), the coordination unit 246, and the data transmitting unit 248 are shown as residing on a single device (e.g., the controller 110), it should be understood that in other embodiments, any combination of the data obtaining unit 241, the tracking unit 242 (e.g., including the eye tracking unit 243 and the hand tracking unit 244), the coordination unit 246, and the data transmitting unit 248 may be located in separate computing devices.

[0144] Moreover, Figure 2 is intended more as functional description of the various features that may be present in a particular implementation as opposed to a structural schematic of the embodiments described herein. As recognized by those of ordinary skill in the art, items shown separately could be combined and some items could be separated. For example, some functional modules shown separately in Figure 2 could be implemented in a single module and the various functions of single functional blocks could be implemented by one or more functional blocks in various embodiments. The actual number of modules and the division of particular functions and how features are allocated among them will vary from oneimplementation to another and, in some embodiments, depends in part on the particular combination of hardware, software, and / or firmware chosen for a particular implementation.

[0145] Figure 3 A is a block diagram of an example of the display generation component120 in accordance with some embodiments. While certain specific features are illustrated, those skilled in the art will appreciate from the present disclosure that various other features have not been illustrated for the sake of brevity, and so as not to obscure more pertinent aspects of the embodiments disclosed herein. To that end, as a non-limiting example, in some embodiments the display generation component 120 (e.g., HMD) includes one or more processing units 302 (e.g., microprocessors, ASICs, FPGAs, GPUs, CPUs, processing cores, and / or the like), one or more input / output (VO) devices and sensors 306, one or more communication interfaces 308 (e.g., USB, FIREWIRE, THUNDERBOLT, IEEE 802.3x, IEEE 802.1 lx, IEEE 802.16x, GSM, CDMA, TDMA, GPS, IR, BLUETOOTH, ZIGBEE, and / or the like type interface), one or more programming (e.g., I / O) interfaces 310, one or more XR displays 312, one or more optional interior- and / or exterior-facing image sensors 314, a memory 320, and one or more communication buses 304 for interconnecting these and various other components.

[0146] In some embodiments, the one or more communication buses 304 include circuitry that interconnects and controls communications between system components. In some embodiments, the one or more I / O devices and sensors 306 include at least one of an inertial measurement unit (IMU), an accelerometer, a gyroscope, a thermometer, one or more physiological sensors (e.g., blood pressure monitor, heart rate monitor, blood oxygen sensor, blood glucose sensor, etc.), one or more microphones, one or more speakers, a haptics engine, one or more depth sensors (e.g., a structured light, a time-of-flight, or the like), and / or the like.

[0147] In some embodiments, the one or more XR displays 312 are configured to provide the XR experience to the user. In some embodiments, the one or more XR displays 312 correspond to holographic, digital light processing (DLP), liquid-crystal display (LCD), liquidcrystal on silicon (LCoS), organic light-emitting field-effect transitory (OLET), organic lightemitting diode (OLED), surface-conduction electron-emitter display (SED), field-emission display (FED), quantum-dot light-emitting diode (QD-LED), micro-electro-mechanical system (MEMS), and / or the like display types. In some embodiments, the one or more XR displays 312 correspond to diffractive, reflective, polarized, holographic, etc. waveguide displays. For example, the display generation component 120 (e.g., HMD) includes a single XR display. In another example, the display generation component 120 includes a XR display for each eye of the user. In some embodiments, the one or more XR displays 312 are capable of presenting MRand VR content. In some embodiments, the one or more XR displays 312 are capable of presenting MR or VR content.

[0148] In some embodiments, the one or more image sensors 314 are configured to obtain image data that corresponds to at least a portion of the face of the user that includes the eyes of the user (and may be referred to as an eye-tracking camera). In some embodiments, the one or more image sensors 314 are configured to obtain image data that corresponds to at least a portion of the user’s hand(s) and optionally arm(s) of the user (and may be referred to as a handtracking camera). In some embodiments, the one or more image sensors 314 are configured to be forward-facing so as to obtain image data that corresponds to the scene as would be viewed by the user if the display generation component 120 (e.g., HMD) was not present (and may be referred to as a scene camera). The one or more optional image sensors 314 can include one or more RGB cameras (e.g., with a complimentary metal-oxide-semiconductor (CMOS) image sensor or a charge-coupled device (CCD) image sensor), one or more infrared (IR) cameras, one or more event-based cameras, and / or the like.

[0149] The memory 320 includes high-speed random-access memory, such as DRAM, SRAM, DDR RAM, or other random-access solid-state memory devices. In some embodiments, the memory 320 includes non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 320 optionally includes one or more storage devices remotely located from the one or more processing units 302. The memory 320 comprises a non-transitory computer readable storage medium. In some embodiments, the memory 320 or the non-transitory computer readable storage medium of the memory 320 stores the following programs, modules and data structures, or a subset thereof including an optional operating system 330 and a XR presentation module 340.

[0150] The operating system 330 includes instructions for handling various basic system services and for performing hardware dependent tasks. In some embodiments, the XR presentation module 340 is configured to present XR content to the user via the one or more XR displays 312. To that end, in various embodiments, the XR presentation module 340 includes a data obtaining unit 342, a XR presenting unit 344, a XR map generating unit 346, and a data transmitting unit 348.

[0151] In some embodiments, the data obtaining unit 342 is configured to obtain data (e.g., presentation data, interaction data, sensor data, location data, etc.) from at least thecontroller 110 of Figure 1 A. To that end, in various embodiments, the data obtaining unit 342 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0152] In some embodiments, the XR presenting unit 344 is configured to present XR content via the one or more XR displays 312. To that end, in various embodiments, the XR presenting unit 344 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0153] In some embodiments, the XR map generating unit 346 is configured to generate a XR map (e.g., a 3D map of the mixed reality scene or a map of the physical environment into which computer-generated objects can be placed to generate the extended reality) based on media content data. To that end, in various embodiments, the XR map generating unit 346 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0154] In some embodiments, the data transmitting unit 348 is configured to transmit data (e.g., presentation data, location data, etc.) to at least the controller 110, and optionally one or more of the input devices 125, output devices 155, sensors 190, and / or peripheral devices 195. To that end, in various embodiments, the data transmitting unit 348 includes instructions and / or logic therefor, and heuristics and metadata therefor.

[0155] Although the data obtaining unit 342, the XR presenting unit 344, the XR map generating unit 346, and the data transmitting unit 348 are shown as residing on a single device (e.g., the display generation component 120 of Figure 1A), it should be understood that in other embodiments, any combination of the data obtaining unit 342, the XR presenting unit 344, the XR map generating unit 346, and the data transmitting unit 348 may be located in separate computing devices.

[0156] Moreover, Figure 3 A is intended more as a functional description of the various features that could be present in a particular implementation as opposed to a structural schematic of the embodiments described herein. As recognized by those of ordinary skill in the art, items shown separately could be combined and some items could be separated. For example, some functional modules shown separately in Figure 3 A could be implemented in a single module and the various functions of single functional blocks could be implemented by one or more functional blocks in various embodiments. The actual number of modules and the division of particular functions and how features are allocated among them will vary from one implementation to another and, in some embodiments, depends in part on the particular combination of hardware, software, and / or firmware chosen for a particular implementation.

[0157] Implementations within the scope of the present disclosure can be partially or entirely realized using a tangible computer-readable storage medium (or multiple tangible computer-readable storage media of one or more types) encoding one or more computer-readable instructions. It should be recognized that computer-readable instructions can be organized in any format, including applications, widgets, processes, software, and / or components.

[0158] Implementations within the scope of the present disclosure include a computer- readable storage medium that encodes instructions organized as an application (e.g., application 3160) that, when executed by one or more processing units, control an electronic device (e.g., device 3150) to perform the method of FIG. 3B, the method of FIG. 3C, and / or one or more other processes and / or methods described herein.

[0159] It should be recognized that application 3160 (shown in FIG. 3D) can be any suitable type of application, including, for example, one or more of: a browser application, an application that functions as an execution environment for plug-ins, widgets or other applications, a fitness application, a health application, a digital payments application, a media application, a social network application, a messaging application, and / or a maps application. In some embodiments, application 3160 is an application that is pre-installed on device 3150 at purchase (e.g., a first-party application). In some embodiments, application 3160 is an application that is provided to device 3150 via an operating system update file (e.g., a first-party application or a second-party application). In some embodiments, application 3160 is an application that is provided via an application store. In some embodiments, the application store can be an application store that is pre-installed on device 3150 at purchase (e.g., a first-party application store). In some embodiments, the application store is a third-party application store (e.g., an application store that is provided by another application store, downloaded via a network, and / or read from a storage device).

[0160] Referring to FIG. 3B and FIG. 3F, application 3160 obtains information (e.g., 3010). In some embodiments, at 3010, information is obtained from at least one hardware component of device 3150. In some embodiments, at 3010, information is obtained from at least one software module of device 3150. In some embodiments, at 3010, information is obtained from at least one hardware component external to device 3150 (e.g., a peripheral device, an accessory device, and / or a server). In some embodiments, the information obtained at 3010 includes positional information, time information, notification information, user information, environment information, electronic device state information, weather information, media information, historical information, event information, hardware information, and / or motioninformation. In some embodiments, in response to and / or after obtaining the information at 3010, application 3160 provides the information to a system (e.g., 3020).

[0161] In some embodiments, the system (e.g., 3110 shown in FIG. 3E) is an operating system hosted on device 3150. In some embodiments, the system (e.g., 3110 shown in FIG. 3E) is an external device (e.g., a server, a peripheral device, an accessory, and / or a personal computing device) that includes an operating system.

[0162] Referring to FIG. 3C and FIG. 3G, application 3160 obtains information (e.g., 3030). In some embodiments, the information obtained at 3030 includes positional information, time information, notification information, user information, environment information electronic device state information, weather information, media information, historical information, event information, hardware information, and / or motion information. In response to and / or after obtaining the information at 3030, application 3160 performs an operation with the information (e.g., 3040). In some embodiments, the operation performed at 3040 includes: providing a notification based on the information, sending a message based on the information, displaying the information, controlling a user interface of a fitness application based on the information, controlling a user interface of a health application based on the information, controlling a focus mode based on the information, setting a reminder based on the information, adding a calendar entry based on the information, and / or calling an API of system 3110 based on the information.

[0163] In some embodiments, one or more steps of the method of FIG. 3B and / or the method of FIG. 3C is performed in response to a trigger. In some embodiments, the trigger includes detection of an event, a notification received from system 3110, a user input, and / or a response to a call to an API provided by system 3110.

[0164] In some embodiments, the instructions of application 3160, when executed, control device 3150 to perform the method of FIG. 3B and / or the method of FIG. 3C by calling an application programming interface (API) (e.g., API 3190) provided by system 3110. In some embodiments, application 3160 performs at least a portion of the method of FIG. 3B and / or the method of FIG. 3C without calling API 3190.

[0165] In some embodiments, one or more steps of the method of FIG. 3B and / or the method of FIG. 3C includes calling an API (e.g., API 3190) using one or more parameters defined by the API. In some embodiments, the one or more parameters include a constant, a key, a data structure, an object, an object class, a variable, a data type, a pointer, an array, a list or apointer to a function or method, and / or another way to reference a data or other item to be passed via the API.

[0166] Referring to FIG. 3D, device 3150 is illustrated. In some embodiments, device 3150 is a personal computing device, a smart phone, a smart watch, a fitness tracker, a head mounted display (HMD) device, a media device, a communal device, a speaker, a television, and / or a tablet. As illustrated in FIG. 3D, device 3150 includes application 3160 and an operating system (e.g., system 3110 shown in FIG. 3E). Application 3160 includes application implementation module 3170 and API-calling module 3180. System 3110 includes API 3190 and implementation module 3100. It should be recognized that device 3150, application 3160, and / or system 3110 can include more, fewer, and / or different components than illustrated in FIGS. 3D and 3E.

[0167] In some embodiments, application implementation module 3170 includes a set of one or more instructions corresponding to one or more operations performed by application 3160. For example, when application 3160 is a messaging application, application implementation module 3170 can include operations to receive and send messages. In some embodiments, application implementation module 3170 communicates with API-calling module 3180 to communicate with system 3110 via API 3190 (shown in FIG. 3E).

[0168] In some embodiments, API 3190 is a software module (e.g., a collection of computer-readable instructions) that provides an interface that allows a different module (e.g., API-calling module 3180) to access and / or use one or more functions, methods, procedures, data structures, classes, and / or other services provided by implementation module 3100 of system 3110. For example, API-calling module 3180 can access a feature of implementation module 3100 through one or more API calls or invocations (e.g., embodied by a function or a method call) exposed by API 3190 (e.g., a software and / or hardware module that can receive API calls, respond to API calls, and / or send API calls) and can pass data and / or control information using one or more parameters via the API calls or invocations. In some embodiments, API 3190 allows application 3160 to use a service provided by a Software Development Kit (SDK) library. In some embodiments, application 3160 incorporates a call to a function or method provided by the SDK library and provided by API 3190 or uses data types or objects defined in the SDK library and provided by API 3190. In some embodiments, API-calling module 3180 makes an API call via API 3190 to access and use a feature of implementation module 3100 that is specified by API 3190. In such embodiments, implementation module 3100 can return a value via API 3190 to API-calling module 3180 in response to the API call. The value can report toapplication 3160 the capabilities or state of a hardware component of device 3150, including those related to aspects such as input capabilities and state, output capabilities and state, processing capability, power state, storage capacity and state, and / or communications capability. In some embodiments, API 3190 is implemented in part by firmware, microcode, or other low level logic that executes in part on the hardware component.

[0169] In some embodiments, API 3190 allows a developer of API-calling module 3180 (which can be a third-party developer) to leverage a feature provided by implementation module 3100. In such embodiments, there can be one or more API-calling modules (e.g., including API- calling module 3180) that communicate with implementation module 3100. In some embodiments, API 3190 allows multiple API-calling modules written in different programming languages to communicate with implementation module 3100 (e.g., API 3190 can include features for translating calls and returns between implementation module 3100 and API-calling module 3180) while API 3190 is implemented in terms of a specific programming language. In some embodiments, API-calling module 3180 calls APIs from different providers such as a set of APIs from an OS provider, another set of APIs from a plug-in provider, and / or another set of APIs from another provider (e.g., the provider of a software library) or creator of the another set of APIs.

[0170] Examples of API 3190 can include one or more of: a pairing API (e.g., for establishing secure connection, e.g., with an accessory), a device detection API (e.g., for locating nearby devices, e.g., media devices and / or smartphone), a payment API, a UIKit API (e.g., for generating user interfaces), a location detection API, a locator API, a maps API, a health sensor API, a sensor API, a messaging API, a push notification API, a streaming API, a collaboration API, a video conferencing API, an application store API, an advertising services API, a web browser API (e.g., WebKit API), a vehicle API, a networking API, a WiFi API, a Bluetooth API, an NFC API, a UWB API, a fitness API, a smart home API, contact transfer API, photos API, camera API, and / or image processing API. In some embodiments, the sensor API is an API for accessing data associated with a sensor of device 3150. For example, the sensor API can provide access to raw sensor data. For another example, the sensor API can provide data derived (and / or generated) from the raw sensor data. In some embodiments, the sensor data includes temperature data, image data, video data, audio data, heart rate data, IMU (inertial measurement unit) data, lidar data, location data, GPS data, and / or camera data. In some embodiments, the sensor includes one or more of an accelerometer, temperature sensor, infrared sensor, optical sensor,heartrate sensor, barometer, gyroscope, proximity sensor, temperature sensor, and / or biometric sensor.

[0171] In some embodiments, implementation module 3100 is a system (e.g., operating system and / or server system) software module (e.g., a collection of computer-readable instructions) that is constructed to perform an operation in response to receiving an API call via API 3190. In some embodiments, implementation module 3100 is constructed to provide an API response (via API 3190) as a result of processing an API call. By way of example, implementation module 3100 and API-calling module 3180 can each be any one of an operating system, a library, a device driver, an API, an application program, or other module. It should be understood that implementation module 3100 and API-calling module 3180 can be the same or different type of module from each other. In some embodiments, implementation module 3100 is embodied at least in part in firmware, microcode, or hardware logic.

[0172] In some embodiments, implementation module 3100 returns a value through API 3190 in response to an API call from API-calling module 3180. While API 3190 defines the syntax and result of an API call (e.g., how to invoke the API call and what the API call does), API 3190 might not reveal how implementation module 3100 accomplishes the function specified by the API call. Various API calls are transferred via the one or more application programming interfaces between API-calling module 3180 and implementation module 3100. Transferring the API calls can include issuing, initiating, invoking, calling, receiving, returning, and / or responding to the function calls or messages. In other words, transferring can describe actions by either of API-calling module 3180 or implementation module 3100. In some embodiments, a function call or other invocation of API 3190 sends and / or receives one or more parameters through a parameter list or other structure.

[0173] In some embodiments, implementation module 3100 provides more than one API, each providing a different view of or with different aspects of functionality implemented by implementation module 3100. For example, one API of implementation module 3100 can provide a first set of functions and can be exposed to third-party developers, and another API of implementation module 3100 can be hidden (e.g., not exposed) and provide a subset of the first set of functions and also provide another set of functions, such as testing or debugging functions which are not in the first set of functions. In some embodiments, implementation module 3100 calls one or more other components via an underlying API and thus is both an API-calling module and an implementation module. It should be recognized that implementation module 3100 can include additional functions, methods, classes, data structures, and / or other featuresthat are not specified through API 3190 and are not available to API-calling module 3180. It should also be recognized that API-calling module 3180 can be on the same system as implementation module 3100 or can be located remotely and access implementation module 3100 using API 3190 over a network. In some embodiments, implementation module 3100, API 3190, and / or API-calling module 3180 is stored in a machine-readable medium, which includes any mechanism for storing information in a form readable by a machine (e.g., a computer or other data processing system). For example, a machine-readable medium can include magnetic disks, optical disks, random access memory; read only memory, and / or flash memory devices.

[0174] An application programming interface (API) is an interface between a first software process and a second software process that specifies a format for communication between the first software process and the second software process. Limited APIs (e.g., private APIs or partner APIs) are APIs that are accessible to a limited set of software processes (e.g., only software processes within an operating system or only software processes that are approved to access the limited APIs). Public APIs that are accessible to a wider set of software processes. Some APIs enable software processes to communicate about or set a state of one or more input devices (e.g., one or more touch sensors, proximity sensors, visual sensors, motion / orientation sensors, pressure sensors, intensity sensors, sound sensors, wireless proximity sensors, biometric sensors, buttons, switches, rotatable elements, and / or external controllers). Some APIs enable software processes to communicate about and / or set a state of one or more output generation components (e.g., one or more audio output generation components, one or more display generation components, and / or one or more tactile output generation components). Some APIs enable particular capabilities (e.g., scrolling, handwriting, text entry, image editing, and / or image creation) to be accessed, performed, and / or used by a software process (e.g., generating outputs for use by a software process based on input from the software process). Some APIs enable content from a software process to be inserted into a template and displayed in a user interface that has a layout and / or behaviors that are specified by the template.

[0175] Many software platforms include a set of frameworks that provides the core objects and core behaviors that a software developer needs to build software applications that can be used on the software platform. Software developers use these objects to display content onscreen, to interact with that content, and to manage interactions with the software platform. Software applications rely on the set of frameworks for their basic behavior, and the set of frameworks provides many ways for the software developer to customize the behavior of the application to match the specific needs of the software application. Many of these core objectsand core behaviors are accessed via an API. An API will typically specify a format for communication between software processes, including specifying and grouping available variables, functions, and protocols. An API call (sometimes referred to as an API request) will typically be sent from a sending software process to a receiving software process as a way to accomplish one or more of the following: the sending software process requesting information from the receiving software process (e.g., for the sending software process to take action on), the sending software process providing information to the receiving software process (e.g., for the receiving software process to take action on), the sending software process requesting action by the receiving software process, or the sending software process providing information to the receiving software process about action taken by the sending software process. Interaction with a device (e.g., using a user interface) will in some circumstances include the transfer and / or receipt of one or more API calls (e.g., multiple API calls) between multiple different software processes (e.g., different portions of an operating system, an application and an operating system, or different applications) via one or more APIs (e.g., via multiple different APIs). For example, when an input is detected the direct sensor data is frequently processed into one or more input events that are provided (e.g., via an API) to a receiving software process that makes some determination based on the input events, and then sends (e.g., via an API) information to a software process to perform an operation (e.g., change a device state and / or user interface) based on the determination. While a determination and an operation performed in response could be made by the same software process, alternatively the determination could be made in a first software process and relayed (e.g., via an API) to a second software process, that is different from the first software process, that causes the operation to be performed by the second software process. Alternatively, the second software process could relay instructions (e.g., via an API) to a third software process that is different from the first software process and / or the second software process to perform the operation. It should be understood that some or all user interactions with a computer system could involve one or more API calls within a step of interacting with the computer system (e.g., between different software components of the computer system or between a software component of the computer system and a software component of one or more remote computer systems). It should be understood that some or all user interactions with a computer system could involve one or more API calls between steps of interacting with the computer system (e.g., between different software components of the computer system or between a software component of the computer system and a software component of one or more remote computer systems).

[0176] In some embodiments, the application can be any suitable type of application, including, for example, one or more of: a browser application, an application that functions as an execution environment for plug-ins, widgets or other applications, a fitness application, a health application, a digital payments application, a media application, a social network application, a messaging application, and / or a maps application.

[0177] In some embodiments, the application is an application that is pre-installed on the first computer system at purchase (e.g., a first-party application). In some embodiments, the application is an application that is provided to the first computer system via an operating system update file (e.g., a first-party application). In some embodiments, the application is an application that is provided via an application store. In some embodiments, the application store is pre-installed on the first computer system at purchase (e.g., a first-party application store) and allows download of one or more applications. In some embodiments, the application store is a third-party application store (e.g., an application store that is provided by another device, downloaded via a network, and / or read from a storage device). In some embodiments, the application is a third-party application (e.g., an app that is provided by an application store, downloaded via a network, and / or read from a storage device). In some embodiments, the application controls the first computer system to perform method 800 (FIG. 8), method 1000 (FIG. 10), method 1200 (FIG. 12), method 1400 (FIG. 14), method 1600 (FIG. 16), and / or method 1800 (FIG. 18) by calling an application programming interface (API) provided by the system process using one or more parameters.

[0178] In some embodiments, exemplary APIs provided by the system process include one or more of: a pairing API (e.g., for establishing secure connection, e.g., with an accessory), a device detection API (e.g., for locating nearby devices, e.g., media devices and / or smartphone), a payment API, a UIKit API (e.g., for generating user interfaces), a location detection API, a locator API, a maps API, a health sensor API, a sensor API, a messaging API, a push notification API, a streaming API, a collaboration API, a video conferencing API, an application store API, an advertising services API, a web browser API (e.g., WebKit API), a vehicle API, a networking API, a WiFi API, a Bluetooth API, an NFC API, a UWB API, a fitness API, a smart home API, contact transfer API, a photos API, a camera API, and / or an image processing API.

[0179] In some embodiments, at least one API is a software module (e.g., a collection of computer-readable instructions) that provides an interface that allows a different module (e.g., API-calling module) to access and use one or more functions, methods, procedures, data structures, classes, and / or other services provided by an implementation module of the systemprocess. The API can define one or more parameters that are passed between the API-calling module and the implementation module. In some embodiments, API 3190 defines a first API call that can be provided by API-calling module 3180. The implementation module is a system software module (e.g., a collection of computer-readable instructions) that is constructed to perform an operation in response to receiving an API call via the API. In some embodiments, the implementation module is constructed to provide an API response (via the API) as a result of processing an API call. In some embodiments, the implementation module is included in the device (e.g., 3150) that runs the application. In some embodiments, the implementation module is included in an electronic device that is separate from the device that runs the application. Figure 4 is a schematic, pictorial illustration of an example embodiment of the hand tracking device 140. In some embodiments, hand tracking device 140 (Figure 1 A) is controlled by hand tracking unit 244 (Figure 2) to track the position / location of one or more portions of the user’s hands, and / or motions of one or more portions of the user’s hands with respect to the scene 105 of Figure 1 A (e.g., with respect to a portion of the physical environment surrounding the user, with respect to the display generation component 120, or with respect to a portion of the user (e.g., the user’s face, eyes, or head), and / or relative to a coordinate system defined relative to the user’s hand. In some embodiments, the hand tracking device 140 is part of the display generation component 120 (e.g., embedded in or attached to a head-mounted device). In some embodiments, the hand tracking device 140 is separate from the display generation component 120 (e.g., located in separate housings or attached to separate physical support structures).

[0180] In some embodiments, the hand tracking device 140 includes image sensors 404 (e.g., one or more IR cameras, 3D cameras, depth cameras, and / or color cameras, etc.) that capture three-dimensional scene information that includes at least a hand 406 of a human user. The image sensors 404 capture the hand images with sufficient resolution to enable the fingers and their respective positions to be distinguished. The image sensors 404 typically capture images of other parts of the user’s body, as well, or possibly all of the body, and may have either zoom capabilities or a dedicated sensor with enhanced magnification to capture images of the hand with the desired resolution. In some embodiments, the image sensors 404 also capture 2D color video images of the hand 406 and other elements of the scene. In some embodiments, the image sensors 404 are used in conjunction with other image sensors to capture the physical environment of the scene 105, or serve as the image sensors that capture the physical environments of the scene 105. In some embodiments, the image sensors 404 are positioned relative to the user or the user’s environment in a way that a field of view of the image sensors ora portion thereof is used to define an interaction space in which hand movement captured by the image sensors are treated as inputs to the controller 110.

[0181] In some embodiments, the image sensors 404 output a sequence of frames containing 3D map data (and possibly color image data, as well) to the controller 110, which extracts high-level information from the map data. This high-level information is typically provided via an Application Program Interface (API) to an application running on the controller, which drives the display generation component 120 accordingly. For example, the user may interact with software running on the controller 110 by moving his hand 406 and changing his hand posture.

[0182] In some embodiments, the image sensors 404 project a pattern of spots onto a scene containing the hand 406 and capture an image of the projected pattern. In some embodiments, the controller 110 computes the 3D coordinates of points in the scene (including points on the surface of the user’s hand) by triangulation, based on transverse shifts of the spots in the pattern. This approach is advantageous in that it does not require the user to hold or wear any sort of beacon, sensor, or other marker. It gives the depth coordinates of points in the scene relative to a predetermined reference plane, at a certain distance from the image sensors 404. In the present disclosure, the image sensors 404 are assumed to define an orthogonal set of x, y, z axes, so that depth coordinates of points in the scene correspond to z components measured by the image sensors. Alternatively, the image sensors 404 (e.g., a hand tracking device) may use other methods of 3D mapping, such as stereoscopic imaging or time-of-flight measurements, based on single or multiple cameras or other types of sensors.

[0183] In some embodiments, the hand tracking device 140 captures and processes a temporal sequence of depth maps containing the user’s hand, while the user moves his hand (e.g., whole hand or one or more fingers). Software running on a processor in the image sensors 404 and / or the controller 110 processes the 3D map data to extract patch descriptors of the hand in these depth maps. The software matches these descriptors to patch descriptors stored in a database 408, based on a prior learning process, in order to estimate the pose of the hand in each frame. The pose typically includes 3D locations of the user’s hand joints and finger tips.

[0184] The software may also analyze the trajectory of the hands and / or fingers over multiple frames in the sequence in order to identify gestures. The pose estimation functions described herein may be interleaved with motion tracking functions, so that patch-based pose estimation is performed only once in every two (or more) frames, while tracking is used to findchanges in the pose that occur over the remaining frames. The pose, motion, and gesture information are provided via the above-mentioned API to an application program running on the controller 110. This program may, for example, move and modify images presented on the display generation component 120, or perform other functions, in response to the pose and / or gesture information.

[0185] In some embodiments, a gesture includes an air gesture. An air gesture is a gesture that is detected without the user touching (or independently of) an input element that is part of a device (e.g., computer system 101, one or more input device 125, and / or hand tracking device 140) and is based on detected motion of a portion (e.g., the head, one or more arms, one or more hands, one or more fingers, and / or one or more legs) of the user’s body through the air including motion of the user’s body relative to an absolute reference (e.g., an angle of the user’s arm relative to the ground or a distance of the user’s hand relative to the ground), relative to another portion of the user’s body (e.g., movement of a hand of the user relative to a shoulder of the user, movement of one hand of the user relative to another hand of the user, and / or movement of a finger of the user relative to another finger or portion of a hand of the user), and / or absolute motion of a portion of the user’s body (e.g., a tap gesture that includes movement of a hand in a predetermined pose by a predetermined amount and / or speed, or a shake gesture that includes a predetermined speed or amount of rotation of a portion of the user’s body).

[0186] In some embodiments, input gestures used in the various examples and embodiments described herein include air gestures performed by movement of the user’s finger(s) relative to other finger(s) or part(s) of the user’s hand) for interacting with an XR environment (e.g., a virtual or mixed-reality environment), in accordance with some embodiments. In some embodiments, an air gesture is a gesture that is detected without the user touching an input element that is part of the device (or independently of an input element that is a part of the device) and is based on detected motion of a portion of the user’s body through the air including motion of the user’s body relative to an absolute reference (e.g., an angle of the user’s arm relative to the ground or a distance of the user’s hand relative to the ground), relative to another portion of the user’s body (e.g., movement of a hand of the user relative to a shoulder of the user, movement of one hand of the user relative to another hand of the user, and / or movement of a finger of the user relative to another finger or portion of a hand of the user), and / or absolute motion of a portion of the user’s body (e.g., a tap gesture that includes movement of a hand in a predetermined pose by a predetermined amount and / or speed, or a shake gesture that includes a predetermined speed or amount of rotation of a portion of the user’s body).

[0187] In some embodiments in which the input gesture is an air gesture (e.g., in the absence of physical contact with an input device that provides the computer system with information about which user interface element is the target of the user input, such as contact with a user interface element displayed on a touchscreen, or contact with a mouse or trackpad to move a cursor to the user interface element), the gesture takes into account the user's attention (e.g., gaze) to determine the target of the user input (e.g., for direct inputs, as described below). Thus, in implementations involving air gestures, the input gesture is, for example, detected attention (e.g., gaze) toward the user interface element in combination (e.g., concurrent) with movement of a user's finger(s) and / or hands to perform a pinch and / or tap input, as described in more detail below.

[0188] In some embodiments, input gestures that are directed to a user interface object are performed directly or indirectly with reference to a user interface object. For example, a user input is performed directly on the user interface object in accordance with performing the input gesture with the user’s hand at a position that corresponds to the position of the user interface object in the three-dimensional environment (e.g., as determined based on a current viewpoint of the user). In some embodiments, the input gesture is performed indirectly on the user interface object in accordance with the user performing the input gesture while a position of the user’s hand is not at the position that corresponds to the position of the user interface object in the three-dimensional environment while detecting the user’s attention (e.g., gaze) on the user interface object. For example, for direct input gesture, the user is enabled to direct the user’s input to the user interface object by initiating the gesture at, or near, a position corresponding to the displayed position of the user interface object (e.g., within 0.5 cm, 1 cm, 5 cm, or a distance between 0-5 cm, as measured from an outer edge of the option or a center portion of the option). For an indirect input gesture, the user is enabled to direct the user’s input to the user interface object by paying attention to the user interface object (e.g., by gazing at the user interface object) and, while paying attention to the option, the user initiates the input gesture (e.g., at any position that is detectable by the computer system) (e.g., at a position that does not correspond to the displayed position of the user interface object).

[0189] In some embodiments, input gestures (e.g., air gestures) used in the various examples and embodiments described herein include pinch inputs and tap inputs, for interacting with a virtual or mixed-reality environment, in accordance with some embodiments. For example, the pinch inputs and tap inputs described below are performed as air gestures.

[0190] In some embodiments, a pinch input is part of an air gesture that includes one or more of: a pinch gesture, a long pinch gesture, a pinch and drag gesture, or a double pinch gesture. For example, a pinch gesture that is an air gesture includes movement of two or more fingers of a hand to make contact with one another, that is, optionally, followed by an immediate (e.g., within 0-1 seconds) break in contact from each other. A long pinch gesture that is an air gesture includes movement of two or more fingers of a hand to make contact with one another for at least a threshold amount of time (e.g., at least 1 second), before detecting a break in contact with one another. For example, a long pinch gesture includes the user holding a pinch gesture (e.g., with the two or more fingers making contact), and the long pinch gesture continues until a break in contact between the two or more fingers is detected. In some embodiments, a double pinch gesture that is an air gesture comprises two (e.g., or more) pinch inputs (e.g., performed by the same hand) detected in immediate (e.g., within a predefined time period) succession of each other. For example, the user performs a first pinch input (e.g., a pinch input or a long pinch input), releases the first pinch input (e.g., breaks contact between the two or more fingers), and performs a second pinch input within a predefined time period (e.g., within 1 second or within 2 seconds) after releasing the first pinch input.

[0191] In some embodiments, a pinch and drag gesture that is an air gesture (e.g., an air drag gesture or an air swipe gesture) includes a pinch gesture (e.g., a pinch gesture or a long pinch gesture) performed in conjunction with (e.g., followed by) a drag input that changes a position of the user’s hand from a first position (e.g., a start position of the drag) to a second position (e.g., an end position of the drag). In some embodiments, the user maintains the pinch gesture while performing the drag input, and releases the pinch gesture (e.g., opens their two or more fingers) to end the drag gesture (e.g., at the second position). In some embodiments, the pinch input and the drag input are performed by the same hand (e.g., the user pinches two or more fingers to make contact with one another and moves the same hand to the second position in the air with the drag gesture). In some embodiments, the pinch input is performed by a first hand of the user and the drag input is performed by the second hand of the user (e.g., the user’s second hand moves from the first position to the second position in the air while the user continues the pinch input with the user’s first hand. In some embodiments, an input gesture that is an air gesture includes inputs (e.g., pinch and / or tap inputs) performed using both of the user’s two hands. For example, the input gesture includes two (e.g., or more) pinch inputs performed in conjunction with (e.g., concurrently with, or within a predefined time period of) each other. For example, a first pinch gesture performed using a first hand of the user (e.g., a pinch input, a longpinch input, or a pinch and drag input), and, in conjunction with performing the pinch input using the first hand, performing a second pinch input using the other hand (e.g., the second hand of the user’s two hands).

[0192] In some embodiments, a tap input (e.g., directed to a user interface element) performed as an air gesture includes movement of a user's finger(s) toward the user interface element, movement of the user's hand toward the user interface element optionally with the user’s finger(s) extended toward the user interface element, a downward motion of a user's finger (e.g., mimicking a mouse click motion or a tap on a touchscreen), or other predefined movement of the user’s hand. In some embodiments a tap input that is performed as an air gesture is detected based on movement characteristics of the finger or hand performing the tap gesture movement of a finger or hand away from the viewpoint of the user and / or toward an object that is the target of the tap input followed by an end of the movement. In some embodiments the end of the movement is detected based on a change in movement characteristics of the finger or hand performing the tap gesture (e.g., an end of movement away from the viewpoint of the user and / or toward the object that is the target of the tap input, a reversal of direction of movement of the finger or hand, and / or a reversal of a direction of acceleration of movement of the finger or hand).

[0193] In some embodiments, attention of a user is determined to be directed to a portion of the three-dimensional environment based on detection of gaze directed to the portion of the three-dimensional environment (optionally, without requiring other conditions). In some embodiments, attention of a user is determined to be directed to a portion of the three- dimensional environment based on detection of gaze directed to the portion of the three- dimensional environment with one or more additional conditions such as requiring that gaze is directed to the portion of the three-dimensional environment for at least a threshold duration (e.g., a dwell duration) and / or requiring that the gaze is directed to the portion of the three- dimensional environment while the viewpoint of the user is within a distance threshold from the portion of the three-dimensional environment in order for the device to determine that attention of the user is directed to the portion of the three-dimensional environment, where if one of the additional conditions is not met, the device determines that attention is not directed to the portion of the three-dimensional environment toward which gaze is directed (e.g., until the one or more additional conditions are met).

[0194] In some embodiments, the detection of a ready state configuration of a user or a portion of a user is detected by the computer system. Detection of a ready state configuration of ahand is used by a computer system as an indication that the user is likely preparing to interact with the computer system using one or more air gesture inputs performed by the hand (e.g., a pinch, tap, pinch and drag, double pinch, long pinch, or other air gesture described herein). For example, the ready state of the hand is determined based on whether the hand has a predetermined hand shape (e.g., a pre-pinch shape with a thumb and one or more fingers extended and spaced apart ready to make a pinch or grab gesture or a pre-tap with one or more fingers extended and palm facing away from the user), based on whether the hand is in a predetermined position relative to a viewpoint of the user (e.g., below the user’s head and above the user’s waist and extended out from the body by at least 15, 20, 25, 30, or 50cm), and / or based on whether the hand has moved in a particular manner (e.g., moved toward a region in front of the user above the user’s waist and below the user’s head or moved away from the user’s body or leg). In some embodiments, the ready state is used to determine whether interactive elements of the user interface respond to attention (e.g., gaze) inputs.

[0195] In scenarios where inputs are described with reference to air gestures, it should be understood that similar gestures could be detected using a hardware input device that is attached to or held by one or more hands of a user, where the position of the hardware input device in space can be tracked using optical tracking, one or more accelerometers, one or more gyroscopes, one or more magnetometers, and / or one or more inertial measurement units and the position and / or movement of the hardware input device is used in place of the position and / or movement of the one or more hands in the corresponding air gesture(s). In scenarios where inputs are described with reference to air gestures, it should be understood that similar gestures could be detected using a hardware input device that is attached to or held by one or more hands of a user. User inputs can be detected with controls contained in the hardware input device such as one or more touch-sensitive input elements, one or more pressure-sensitive input elements, one or more buttons, one or more knobs, one or more dials, one or more joysticks, one or more hand or finger coverings that can detect a position or change in position of portions of a hand and / or fingers relative to each other, relative to the user’s body, and / or relative to a physical environment of the user, and / or other hardware input device controls, where the user inputs with the controls contained in the hardware input device are used in place of hand and / or finger gestures such as air taps or air pinches in the corresponding air gesture(s). For example, a selection input that is described as being performed with an air tap or air pinch input could be alternatively detected with a button press, a tap on a touch-sensitive surface, a press on a pressure-sensitive surface, or other hardware input. As another example, a movement input thatis described as being performed with an air pinch and drag (e.g., an air drag gesture or an air swipe gesture) could be alternatively detected based on an interaction with the hardware input control such as a button press and hold, a touch on a touch-sensitive surface, a press on a pressure-sensitive surface, or other hardware input that is followed by movement of the hardware input device (e.g., along with the hand with which the hardware input device is associated) through space. Similarly, a two-handed input that includes movement of the hands relative to each other could be performed with one air gesture and one hardware input device in the hand that is not performing the air gesture, two hardware input devices held in different hands, or two air gestures performed by different hands using various combinations of air gestures and / or the inputs detected by one or more hardware input devices that are described above.

[0196] In some embodiments, the software may be downloaded to the controller 110 in electronic form, over a network, for example, or it may alternatively be provided on tangible, non-transitory media, such as optical, magnetic, or electronic memory media. In some embodiments, the database 408 is likewise stored in a memory associated with the controller 110. Alternatively or additionally, some or all of the described functions of the computer may be implemented in dedicated hardware, such as a custom or semi-custom integrated circuit or a programmable digital signal processor (DSP). Although the controller 110 is shown in Figure 4, by way of example, as a separate unit from the image sensors 404, some or all of the processing functions of the controller may be performed by a suitable microprocessor and software or by dedicated circuitry within the housing of the image sensors 404 (e.g., a hand tracking device) or otherwise associated with the image sensors 404. In some embodiments, at least some of these processing functions may be carried out by a suitable processor that is integrated with the display generation component 120 (e.g., in a television set, a handheld device, or head-mounted device, for example) or with any other suitable computerized device, such as a game console or media player. The sensing functions of image sensors 404 may likewise be integrated into the computer or other computerized apparatus that is to be controlled by the sensor output.

[0197] Figure 4 further includes a schematic representation of a depth map 410 captured by the image sensors 404, in accordance with some embodiments. The depth map, as explained above, comprises a matrix of pixels having respective depth values. The pixels 412 corresponding to the hand 406 have been segmented out from the background and the wrist in this map. The brightness of each pixel within the depth map 410 corresponds inversely to its depth value, i.e., the measured z distance from the image sensors 404, with the shade of gray growing darker with increasing depth. The controller 110 processes these depth values in orderto identify and segment a component of the image (i.e., a group of neighboring pixels) having characteristics of a human hand. These characteristics, may include, for example, overall size, shape and motion from frame to frame of the sequence of depth maps.

[0198] Figure 4 also schematically illustrates a hand skeleton 414 that controller 110 ultimately extracts from the depth map 410 of the hand 406, in accordance with some embodiments. In Figure 4, the hand skeleton 414 is superimposed on a hand background 416 that has been segmented from the original depth map. In some embodiments, key feature points of the hand (e.g., points corresponding to knuckles, finger tips, center of the palm, end of the hand connecting to wrist, etc.) and optionally on the wrist or arm connected to the hand are identified and located on the hand skeleton 414. In some embodiments, location and movements of these key feature points over multiple image frames are used by the controller 110 to determine the hand gestures performed by the hand or the current state of the hand, in accordance with some embodiments.

[0199] Figure 5 illustrates an example embodiment of the eye tracking device 130 (Figure 1A). In some embodiments, the eye tracking device 130 is controlled by the eye tracking unit 243 (Figure 2) to track the position and movement of the user’s gaze with respect to the scene 105 or with respect to the XR content displayed via the display generation component 120. In some embodiments, the eye tracking device 130 is integrated with the display generation component 120. For example, in some embodiments, when the display generation component 120 is a head-mounted device such as headset, helmet, goggles, or glasses, or a handheld device placed in a wearable frame, the head-mounted device includes both a component that generates the XR content for viewing by the user and a component for tracking the gaze of the user relative to the XR content. In some embodiments, the eye tracking device 130 is separate from the display generation component 120. For example, when display generation component is a handheld device or a XR chamber, the eye tracking device 130 is optionally a separate device from the handheld device or XR chamber. In some embodiments, the eye tracking device 130 is a head-mounted device or part of a head-mounted device. In some embodiments, the headmounted eye-tracking device 130 is optionally used in conjunction with a display generation component that is also head-mounted, or a display generation component that is not headmounted. In some embodiments, the eye tracking device 130 is not a head-mounted device, and is optionally used in conjunction with a head-mounted display generation component. In some embodiments, the eye tracking device 130 is not a head-mounted device, and is optionally part of a non-head-mounted display generation component.

[0200] In some embodiments, the display generation component 120 uses a display mechanism (e.g., left and right near-eye display panels) for displaying frames including left and right images in front of a user’s eyes to thus provide 3D virtual views to the user. For example, a head-mounted display generation component may include left and right optical lenses (referred to herein as eye lenses) located between the display and the user’s eyes. In some embodiments, the display generation component may include or be coupled to one or more external video cameras that capture video of the user’s environment for display. In some embodiments, a headmounted display generation component may have a transparent or semi-transparent display through which a user may view the physical environment directly and display virtual objects on the transparent or semi-transparent display. In some embodiments, display generation component projects virtual objects into the physical environment. The virtual objects may be projected, for example, on a physical surface or as a holograph, so that an individual, using the system, observes the virtual objects superimposed over the physical environment. In such cases, separate display panels and image frames for the left and right eyes may not be necessary.

[0201] As shown in Figure 5, in some embodiments, eye tracking device 130 (e.g., a gaze tracking device) includes at least one eye tracking camera (e.g., infrared (IR) or near-IR (NIR) cameras), and illumination sources (e.g., IR or NIR light sources such as an array or ring of LEDs) that emit light (e.g., IR or NIR light) towards the user’s eyes. The eye tracking cameras may be pointed towards the user’s eyes to receive reflected IR or NIR light from the light sources directly from the eyes, or alternatively may be pointed towards “hot” mirrors located between the user’s eyes and the display panels that reflect IR or NIR light from the eyes to the eye tracking cameras while allowing visible light to pass. The eye tracking device 130 optionally captures images of the user’s eyes (e.g., as a video stream captured at 60-120 frames per second (fps)), analyze the images to generate gaze tracking information, and communicate the gaze tracking information to the controller 110. In some embodiments, two eyes of the user are separately tracked by respective eye tracking cameras and illumination sources. In some embodiments, only one eye of the user is tracked by a respective eye tracking camera and illumination sources.

[0202] In some embodiments, the eye tracking device 130 is calibrated using a devicespecific calibration process to determine parameters of the eye tracking device for the specific operating environment 100, for example the 3D geometric relationship and parameters of the LEDs, cameras, hot mirrors (if present), eye lenses, and display screen. The device-specific calibration process may be performed at the factory or another facility prior to delivery of theAR / VR equipment to the end user. The device- specific calibration process may be an automated calibration process or a manual calibration process. A user-specific calibration process may include an estimation of a specific user’s eye parameters, for example the pupil location, fovea location, optical axis, visual axis, eye spacing, etc. Once the device-specific and user- specific parameters are determined for the eye tracking device 130, images captured by the eye tracking cameras can be processed using a glint-assisted method to determine the current visual axis and point of gaze of the user with respect to the display, in accordance with some embodiments.

[0203] As shown in Figure 5, the eye tracking device 130 (e.g., 130A or 130B) includes eye lens(es) 520, and a gaze tracking system that includes at least one eye tracking camera 540 (e.g., infrared (IR) or near-IR (NIR) cameras) positioned on a side of the user’s face for which eye tracking is performed, and an illumination source 530 (e.g., IR or NIR light sources such as an array or ring of NIR light-emitting diodes (LEDs)) that emit light (e.g., IR or NIR light) towards the user’s eye(s) 592. The eye tracking cameras 540 may be pointed towards mirrors 550 located between the user’s eye(s) 592 and a display 510 (e.g., a left or right display panel of a head-mounted display, or a display of a handheld device, a projector, etc.) that reflect IR or NIR light from the eye(s) 592 while allowing visible light to pass (e.g., as shown in the top portion of Figure 5), or alternatively may be pointed towards the user’s eye(s) 592 to receive reflected IR or NIR light from the eye(s) 592 (e.g., as shown in the bottom portion of Figure 5).

[0204] In some embodiments, the controller 110 renders AR or VR frames 562 (e.g., left and right frames for left and right display panels) and provides the frames 562 to the display 510. The controller 110 uses gaze tracking input 542 from the eye tracking cameras 540 for various purposes, for example in processing the frames 562 for display. The controller 110 optionally estimates the user’s point of gaze on the display 510 based on the gaze tracking input 542 obtained from the eye tracking cameras 540 using the glint-assisted methods or other suitable methods. The point of gaze estimated from the gaze tracking input 542 is optionally used to determine the direction in which the user is currently looking.

[0205] The following describes several possible use cases for the user’s current gaze direction, and is not intended to be limiting. As an example use case, the controller 110 may render virtual content differently based on the determined direction of the user’s gaze. For example, the controller 110 may generate virtual content at a higher resolution in a foveal region determined from the user’s current gaze direction than in peripheral regions. As another example, the controller may position or move virtual content in the view based at least in part on the user’s current gaze direction. As another example, the controller may display particularvirtual content in the view based at least in part on the user’s current gaze direction. As another example use case in AR applications, the controller 110 may direct external cameras for capturing the physical environments of the XR experience to focus in the determined direction. The autofocus mechanism of the external cameras may then focus on an object or surface in the environment that the user is currently looking at on the display 510. As another example use case, the eye lenses 520 may be focusable lenses, and the gaze tracking information is used by the controller to adjust the focus of the eye lenses 520 so that the virtual object that the user is currently looking at has the proper vergence to match the convergence of the user’s eyes 592. The controller 110 may leverage the gaze tracking information to direct the eye lenses 520 to adjust focus so that close objects that the user is looking at appear at the right distance.

[0206] In some embodiments, the eye tracking device is part of a head-mounted device that includes a display (e.g., display 510), two eye lenses (e.g., eye lens(es) 520), eye tracking cameras (e.g., eye tracking camera(s) 540), and light sources (e.g., illumination sources 530 (e.g., IR or NIR LEDs), mounted in a wearable housing. The light sources emit light (e.g., IR or NIR light) towards the user’s eye(s) 592. In some embodiments, the light sources may be arranged in rings or circles around each of the lenses as shown in Figure 5. In some embodiments, eight illumination sources 530 (e.g., LEDs) are arranged around each lens 520 as an example. However, more or fewer illumination sources 530 may be used, and other arrangements and locations of illumination sources 530 may be used.

[0207] In some embodiments, the display 510 emits light in the visible light range and does not emit light in the IR or NIR range, and thus does not introduce noise in the gaze tracking system. Note that the location and angle of eye tracking camera(s) 540 is given by way of example, and is not intended to be limiting. In some embodiments, a single eye tracking camera 540 is located on each side of the user’s face. In some embodiments, two or more NIR cameras 540 may be used on each side of the user’s face. In some embodiments, a camera 540 with a wider field of view (FOV) and a camera 540 with a narrower FOV may be used on each side of the user’s face. In some embodiments, a camera 540 that operates at one wavelength (e.g., 850nm) and a camera 540 that operates at a different wavelength (e.g., 940nm) may be used on each side of the user’s face.

[0208] Embodiments of the gaze tracking system as illustrated in Figure 5 may, for example, be used in computer-generated reality, virtual reality, and / or mixed reality applications to provide computer-generated reality, virtual reality, augmented reality, and / or augmented virtuality experiences to the user.

[0209] Figure 6 illustrates a glint-assisted gaze tracking pipeline, in accordance with some embodiments. In some embodiments, the gaze tracking pipeline is implemented by a glint- assisted gaze tracking system (e.g., eye tracking device 130 as illustrated in Figures 1 A and 5). The glint-assisted gaze tracking system may maintain a tracking state. Initially, the tracking state is off or “NO”. When in the tracking state, the glint-assisted gaze tracking system uses prior information from the previous frame when analyzing the current frame to track the pupil contour and glints in the current frame. When not in the tracking state, the glint-assisted gaze tracking system attempts to detect the pupil and glints in the current frame and, if successful, initializes the tracking state to “YES” and continues with the next frame in the tracking state.

[0210] As shown in Figure 6, the gaze tracking cameras may capture left and right images of the user’s left and right eyes. The captured images are then input to a gaze tracking pipeline for processing beginning at 610. As indicated by the arrow returning to element 600, the gaze tracking system may continue to capture images of the user’s eyes, for example at a rate of 60 to 120 frames per second. In some embodiments, each set of captured images may be input to the pipeline for processing. However, in some embodiments or under some conditions, not all captured frames are processed by the pipeline.

[0211] At 610, for the current captured images, if the tracking state is YES, then the method proceeds to element 640. At 610, if the tracking state is NO, then as indicated at 620 the images are analyzed to detect the user’s pupils and glints in the images. At 630, if the pupils and glints are successfully detected, then the method proceeds to element 640. Otherwise, the method returns to element 610 to process next images of the user’s eyes.

[0212] At 640, if proceeding from element 610, the current frames are analyzed to track the pupils and glints based in part on prior information from the previous frames. At 640, if proceeding from element 630, the tracking state is initialized based on the detected pupils and glints in the current frames. Results of processing at element 640 are checked to verify that the results of tracking or detection can be trusted. For example, results may be checked to determine if the pupil and a sufficient number of glints to perform gaze estimation are successfully tracked or detected in the current frames. At 650, if the results cannot be trusted, then the tracking state is set to NO at element 660, and the method returns to element 610 to process next images of the user’s eyes. At 650, if the results are trusted, then the method proceeds to element 670. At 670, the tracking state is set to YES (if not already YES), and the pupil and glint information is passed to element 680 to estimate the user’s point of gaze.

[0213] Figure 6 is intended to serve as one example of eye tracking technology that may be used in a particular implementation. As recognized by those of ordinary skill in the art, other eye tracking technologies that currently exist or are developed in the future may be used in place of or in combination with the glint-assisted eye tracking technology describe herein in the computer system 101 for providing XR experiences to users, in accordance with various embodiments.

[0214] In some embodiments, the captured portions of real world environment 602 are used to provide a XR experience to the user, for example, a mixed reality environment in which one or more virtual objects are superimposed over representations of real world environment 602.

[0215] Thus, the description herein describes some embodiments of three-dimensional environments (e.g., XR environments) that include representations of real world objects and representations of virtual objects. For example, a three-dimensional environment optionally includes a representation of a table that exists in the physical environment, which is captured and displayed in the three-dimensional environment (e.g., actively via cameras and displays of a computer system, or passively via a transparent or translucent display of the computer system). As described previously, the three-dimensional environment is optionally a mixed reality system in which the three-dimensional environment is based on the physical environment that is captured by one or more sensors of the computer system and displayed via a display generation component. As a mixed reality system, the computer system is optionally able to selectively display portions and / or objects of the physical environment such that the respective portions and / or objects of the physical environment appear as if they exist in the three-dimensional environment displayed by the computer system. Similarly, the computer system is optionally able to display virtual objects in the three-dimensional environment to appear as if the virtual objects exist in the real world (e.g., physical environment) by placing the virtual objects at respective locations in the three-dimensional environment that have corresponding locations in the real world. For example, the computer system optionally displays a vase such that it appears as if a real vase is placed on top of a table in the physical environment. In some embodiments, a respective location in the three-dimensional environment has a corresponding location in the physical environment. Thus, when the computer system is described as displaying a virtual object at a respective location with respect to a physical object (e.g., such as a location at or near the hand of the user, or at or near a physical table), the computer system displays the virtual object at a particular location in the three-dimensional environment such that it appears as if thevirtual object is at or near the physical object in the physical world (e.g., the virtual object is displayed at a location in the three-dimensional environment that corresponds to a location in the physical environment at which the virtual object would be displayed if it were a real object at that particular location).

[0216] In some embodiments, real world objects that exist in the physical environment that are displayed in the three-dimensional environment (e.g., and / or visible via the display generation component) can interact with virtual objects that exist only in the three-dimensional environment. For example, a three-dimensional environment can include a table and a vase placed on top of the table, with the table being a view of (or a representation of) a physical table in the physical environment, and the vase being a virtual object.

[0217] In a three-dimensional environment (e.g., a real environment, a virtual environment, or an environment that includes a mix of real and virtual objects), objects are sometimes referred to as having a depth or simulated depth, or objects are referred to as being visible, displayed, or placed at different depths. In this context, depth refers to a dimension other than height or width. In some embodiments, depth is defined relative to a fixed set of coordinates (e.g., where a room or an object has a height, depth, and width defined relative to the fixed set of coordinates). In some embodiments, depth is defined relative to a location or viewpoint of a user, in which case, the depth dimension varies based on the location of the user and / or the location and angle of the viewpoint of the user. In some embodiments where depth is defined relative to a location of a user that is positioned relative to a surface of an environment (e.g., a floor of an environment, or a surface of the ground), objects that are further away from the user along a line that extends parallel to the surface are considered to have a greater depth in the environment, and / or the depth of an object is measured along an axis that extends outward from a location of the user and is parallel to the surface of the environment (e.g., depth is defined in a cylindrical or substantially cylindrical coordinate system with the position of the user at the center of the cylinder that extends from a head of the user toward feet of the user). In some embodiments where depth is defined relative to viewpoint of a user (e.g., a direction relative to a point in space that determines which portion of an environment that is visible via a head mounted device or other display), objects that are further away from the viewpoint of the user along a line that extends parallel to the direction of the viewpoint of the user are considered to have a greater depth in the environment, and / or the depth of an object is measured along an axis that extends outward from a line that extends from the viewpoint of the user and is parallel to the direction of the viewpoint of the user (e.g., depth is defined in a spherical or substantially sphericalcoordinate system with the origin of the viewpoint at the center of the sphere that extends outwardly from a head of the user). In some embodiments, depth is defined relative to a user interface container (e.g., a window or application in which application and / or system content is displayed) where the user interface container has a height and / or width, and depth is a dimension that is orthogonal to the height and / or width of the user interface container. In some embodiments, in circumstances where depth is defined relative to a user interface container, the height and or width of the container are typically orthogonal or substantially orthogonal to a line that extends from a location based on the user (e.g., a viewpoint of the user or a location of the user) to the user interface container (e.g., the center of the user interface container, or another characteristic point of the user interface container) when the container is placed in the three- dimensional environment or is initially displayed (e.g., so that the depth dimension for the container extends outward away from the user or the viewpoint of the user). In some embodiments, in situations where depth is defined relative to a user interface container, depth of an object relative to the user interface container refers to a position of the object along the depth dimension for the user interface container. In some embodiments, multiple different containers can have different depth dimensions (e.g., different depth dimensions that extend away from the user or the viewpoint of the user in different directions and / or from different starting points). In some embodiments, when depth is defined relative to a user interface container, the direction of the depth dimension remains constant for the user interface container as the location of the user interface container, the user and / or the viewpoint of the user changes (e.g., or when multiple different viewers are viewing the same container in the three-dimensional environment such as during an in-person collaboration session and / or when multiple participants are in a real-time communication session with shared virtual content including the container). In some embodiments, for curved containers (e.g., including a container with a curved surface or curved content region), the depth dimension optionally extends into a surface of the curved container. In some situations, z-separation (e.g., separation of two objects in a depth dimension), z-height (e.g., distance of one object from another in a depth dimension), z-position (e.g., position of one object in a depth dimension), z-depth (e.g., position of one object in a depth dimension), or simulated z dimension (e.g., depth used as a dimension of an object, dimension of an environment, a direction in space, and / or a direction in simulated space) are used to refer to the concept of depth as described above.

[0218] In some embodiments, a user is optionally able to interact with virtual objects in the three-dimensional environment using one or more hands as if the virtual objects were realobjects in the physical environment. For example, as described above, one or more sensors of the computer system optionally capture one or more of the hands of the user and display representations of the hands of the user in the three-dimensional environment (e.g., in a manner similar to displaying a real world object in three-dimensional environment described above), or in some embodiments, the hands of the user are visible via the display generation component via the ability to see the physical environment through the user interface due to the transparency / translucency of a portion of the display generation component that is displaying the user interface or due to projection of the user interface onto a transparent / translucent surface or projection of the user interface onto the user’s eye or into a field of view of the user’s eye. Thus, in some embodiments, the hands of the user are displayed at a respective location in the three- dimensional environment and are treated as if they were objects in the three-dimensional environment that are able to interact with the virtual objects in the three-dimensional environment as if they were physical objects in the physical environment. In some embodiments, the computer system is able to update display of the representations of the user’s hands in the three-dimensional environment in conjunction with the movement of the user’s hands in the physical environment.

[0219] In some of the embodiments described below, the computer system is optionally able to determine the “effective” distance between physical objects in the physical world and virtual objects in the three-dimensional environment, for example, for the purpose of determining whether a physical object is directly interacting with a virtual object (e.g., whether a hand is touching, grabbing, holding, etc. a virtual object or within a threshold distance of a virtual object). For example, a hand directly interacting with a virtual object optionally includes one or more of a finger of a hand pressing a virtual button, a hand of a user grabbing a virtual vase, two fingers of a hand of the user coming together and pinching / holding a user interface of an application, and any of the other types of interactions described here. For example, the computer system optionally determines the distance between the hands of the user and virtual objects when determining whether the user is interacting with virtual objects and / or how the user is interacting with virtual objects. In some embodiments, the computer system determines the distance between the hands of the user and a virtual object by determining the distance between the location of the hands in the three-dimensional environment and the location of the virtual object of interest in the three-dimensional environment. For example, the one or more hands of the user are located at a particular position in the physical world, which the computer system optionally captures and displays at a particular corresponding position in the three-dimensionalenvironment (e.g., the position in the three-dimensional environment at which the hands would be displayed if the hands were virtual, rather than physical, hands). The position of the hands in the three-dimensional environment is optionally compared with the position of the virtual object of interest in the three-dimensional environment to determine the distance between the one or more hands of the user and the virtual object. In some embodiments, the computer system optionally determines a distance between a physical object and a virtual object by comparing positions in the physical world (e.g., as opposed to comparing positions in the three-dimensional environment). For example, when determining the distance between one or more hands of the user and a virtual object, the computer system optionally determines the corresponding location in the physical world of the virtual object (e.g., the position at which the virtual object would be located in the physical world if it were a physical object rather than a virtual object), and then determines the distance between the corresponding physical position and the one of more hands of the user. In some embodiments, the same techniques are optionally used to determine the distance between any physical object and any virtual object. Thus, as described herein, when determining whether a physical object is in contact with a virtual object or whether a physical object is within a threshold distance of a virtual object, the computer system optionally performs any of the techniques described above to map the location of the physical object to the three- dimensional environment and / or map the location of the virtual object to the physical environment.

[0220] In some embodiments, the same or similar technique is used to determine where and what the gaze of the user is directed to and / or where and at what a physical stylus held by a user is pointed. For example, if the gaze of the user is directed to a particular position in the physical environment, the computer system optionally determines the corresponding position in the three-dimensional environment (e.g., the virtual position of the gaze), and if a virtual object is located at that corresponding virtual position, the computer system optionally determines that the gaze of the user is directed to that virtual object. Similarly, the computer system is optionally able to determine, based on the orientation of a physical stylus, to where in the physical environment the stylus is pointing. In some embodiments, based on this determination, the computer system determines the corresponding virtual position in the three-dimensional environment that corresponds to the location in the physical environment to which the stylus is pointing, and optionally determines that the stylus is pointing at the corresponding virtual position in the three-dimensional environment.

[0221] Similarly, the embodiments described herein may refer to the location of the user (e.g., the user of the computer system) and / or the location of the computer system in the three- dimensional environment. In some embodiments, the user of the computer system is holding, wearing, or otherwise located at or near the computer system. Thus, in some embodiments, the location of the computer system is used as a proxy for the location of the user. In some embodiments, the location of the computer system and / or user in the physical environment corresponds to a respective location in the three-dimensional environment. For example, the location of the computer system would be the location in the physical environment (and its corresponding location in the three-dimensional environment) from which, if a user were to stand at that location facing a respective portion of the physical environment that is visible via the display generation component, the user would see the objects in the physical environment in the same positions, orientations, and / or sizes as they are displayed by or visible via the display generation component of the computer system in the three-dimensional environment (e.g., in absolute terms and / or relative to each other). Similarly, if the virtual objects displayed in the three-dimensional environment were physical objects in the physical environment (e.g., placed at the same locations in the physical environment as they are in the three-dimensional environment, and having the same sizes and orientations in the physical environment as in the three- dimensional environment), the location of the computer system and / or user is the position from which the user would see the virtual objects in the physical environment in the same positions, orientations, and / or sizes as they are displayed by the display generation component of the computer system in the three-dimensional environment (e.g., in absolute terms and / or relative to each other and the real world objects).

[0222] In the present disclosure, various input methods are described with respect to interactions with a computer system. When an example is provided using one input device or input method and another example is provided using another input device or input method, it is to be understood that each example may be compatible with and optionally utilizes the input device or input method described with respect to another example. Similarly, various output methods are described with respect to interactions with a computer system. When an example is provided using one output device or output method and another example is provided using another output device or output method, it is to be understood that each example may be compatible with and optionally utilizes the output device or output method described with respect to another example. Similarly, various methods are described with respect to interactions with a virtual environment or a mixed reality environment through a computer system. When anexample is provided using interactions with a virtual environment and another example is provided using mixed reality environment, it is to be understood that each example may be compatible with and optionally utilizes the methods described with respect to another example. As such, the present disclosure discloses embodiments that are combinations of the features of multiple examples, without exhaustively listing all features of an embodiment in the description of each example embodiment.USER INTERFACES AND ASSOCIATED PROCESSES

[0223] Attention is now directed towards embodiments of user interfaces (“UP’) and associated processes that may be implemented on a computer system, such as portable multifunction device or a head-mounted device, with a display generation component, one or more input devices, and (optionally) one or cameras.

[0224] Figs. 7A-7BB illustrate methods of and systems for scrolling scrollable content in response to gaze-based inputs in accordance with some embodiments of the disclosure. Figs. 7A- 7BB illustrate exemplary ways in which a computer system scrolls scrollable content in response to gaze-based inputs in accordance with some embodiments of the disclosure. The user interfaces in Figs. 7A-7BB are used to illustrate the processes described below, including the processes in Fig. 8.

[0225] Fig. 7A illustrates a computer system 101 (e.g., an electronic device) displaying, via a display generation component 120 (e.g., display generation components l-122a and l-122b of Fig. 1), a three-dimensional environment 700 from a viewpoint of a user of the computer system 101. In Fig. 7A, the computer system 101 includes one or more internal image sensors 114a oriented towards the face of the user (e.g., eye tracking cameras 540 described with reference to Fig. 5). In some embodiments, internal image sensors 114a are used for eye tracking (e.g., detecting a gaze of the user). Internal image sensors 114a are optionally arranged on the left and right portions of display generation component 120 to enable eye tracking of the user’s left and right eyes. Computer system 101 also includes external image sensors 114b and 114c facing outwards from the user to detect and / or capture the physical environment and / or movements of the user’s hands.

[0226] As shown in Fig. 7A, computer system 101 captures one or more images of the physical environment around computer system 101 (e.g., operating environment 100 of Fig. 1), including one or more objects in the physical environment around computer system 101. In some embodiments, computer system 101 displays representations of the physical environmentin three-dimensional environment 700. For example, three-dimensional environment 700 includes representations of the rear and side walls of the room in which the computer system 101 is located.

[0227] As discussed in more detail below, in Fig. 7A, display generation component 120 is illustrated as displaying one or more virtual objects in the three-dimensional environment 700. In some embodiments, the one or more virtual objects are displayed by a single display (e.g., display 510 of Fig. 5) included in display generation component 120. In some embodiments, display generation component 120 includes two or more displays (e.g., left and right display panels for the left and right eyes of the user, respectively, as described with reference to Fig. 5) having displayed outputs that are merged (e.g., by the user’s brain) to create the view of the virtual objects shown in Figs. 7A-7BB. Display generation component 120 has a field of view (e.g., a field of view captured by external image sensors 114b and 114c and / or visible to the user via display generation component 120) that corresponds to the virtual objects shown in Fig. 7A. Because display generation component 120 is optionally a head-mounted device, the field of view of display generation component 120 is optionally the same as or similar to the field of view of the user.

[0228] In some embodiments, a user interface illustrated and described below could also be implemented on a head-mounted display that includes the display generation component 120 that displays the user interface or three-dimensional environment to the user, and sensors to detect the physical environment and / or movements of the user’s hands (e.g., external sensors facing outwards from the user), and / or attention (e.g., gaze) of the user (e.g., internal sensors facing inwards towards the face of the user) such as movements that are interpreted by the computer system as gestures such as air gestures. Additionally, in some embodiments, input to computer system 101 is provided via air gestures from hand (e.g., hand 406 of Fig. 4) and / or attention of the user (e.g., as described in more detail with reference to method 800), or via a trackpad from hand 406, and inputs described herein are optionally received via the trackpad or via air gestures / attention.

[0229] In Fig. 7A, three-dimensional environment 700 includes a plurality of virtual objects, such as user interfaces and / or user interface elements 704a, 706a, 718, and 720. In some embodiments, the virtual objects are optionally components of a user interface or window of an application containing scrollable content, such as a reading application, a media content application, a platform control application, or other application described with reference to method(s) 800, 1000, and / or 1200. In some embodiments, the term “scrollable content” refers tothe user interface or window of the application. In some embodiments, the term “scrollable content” refers to content bounded to the user interface or window of the application. For example, in Fig. 7A, the computer system 101 displays internet browsing user interface element 704a (e.g., also referred to herein as a window or volume) of a web browser application containing website content, such as text, images, video, hyperlinks, and / or audio content, from the website. In Fig. 7A, internet browsing user interface element 704a includes a navigation user interface element 706a, control element 718, and control element 720. In some embodiments, the navigation user interface element 706a includes a side bar user interface button 706b that, when selected, causes the computer system 101 to expand internet browsing user interface element 704a to include additional content as will be described below. In some embodiments, navigation user interface element 706a includes an address bar and / or a plurality of user interface elements or buttons associated with the internet browsing user interface element 704a. As will be described in more detail with reference to Figs. 9A-9KK and / or method 1000, control elements 718 and 720 are selectable to cause the computer system 101 to perform respective operations associated with the internet browsing user interface element 704a, such as closing (e.g., cease to display) internet browsing user interface element 704a or moving (and / or resize) the internet browsing user interface element 704a.

[0230] In Fig. 7A, internet browsing user interface element 704a includes scrollable content, such as an article that includes text-based content 704f, image-based content 704e, and additional content 716a. The internet browsing user interface element 704a includes a first scrolling region 704b and a second scrolling region 704c. As will be described in more detail below, in response to detecting the gaze of the user directed to the first scrolling region 704b or the second scrolling region 704c (e.g., without requiring additional user input as described below), the computer system 101 scrolls the scrollable content including the text-based content 704f and image-based content 704e respectively. In the example of Fig. 7A, the internet browsing user interface element 704a includes a third region 704d and in response to detecting the gaze of the user directed to the third region 704d, the computer system 101 does not scroll the scrollable content. In some embodiments, the third region 704d is not responsive to a gaze- only input (e.g., not including input from one or more portions of the user (e.g., hand, arm, and / or finger) of the computer system 101 other than those portions (e.g., eyes) providing the gaze input) as described with reference to method(s) 800 and / or 1000. In some embodiments, while the gaze of the user directed to the third region 704d, the computer system 101 detects that a respective input element (e.g., as described in method 1000) is providing an input to scroll thescrollable content, and in response, the computer system 101 scrolls the scrollable content in accordance with the respective input element as described in method 1000. For illustrative purposes, as shown in Fig. 7A and the figures that follow, the first scrolling region 704b, the second region 704c, and the third region 704d are bounded by dashed lines, and it should be understood that the dashed lines of the respective regions are optionally not displayed via the display generation component 120.

[0231] In some embodiments, when the computer system 101 scrolls the scrollable content vertically, the first scrolling region 704b is at the top of the internet browsing user interface element 704a and the second scrolling region 704c is at the bottom of internet browsing user interface element 704a. As shown in Fig. 7A, the second scrolling region 704c is larger than the first scrolling region 704b. In some embodiments, when the scrollable content is scrolled horizontally, the internet browsing user interface element 704a includes a left scrolling region and a right scrolling region that are disposed on the right and left sides of internet browsing user interface element 704a.

[0232] As mentioned above, the scrollable content includes additional content 716a as shown in Fig. 7 A. In some embodiments, the additional content 716a includes embedded content, and / or selectable links to other content. For example, and as will be described in more detail below, additional content 716a includes a list of representations (e.g., icons, images, text, and / or other graphics) of other articles related to the article displayed in internet browsing user interface element 704a. In some embodiments, a representation of an article is selectable to display the article as will be described in more detail below.

[0233] In some embodiments, in response to detecting that the gaze of the user is directed to the first scrolling region 704b or the second scrolling region 704c, the computer system 101 displays a visual indication that a respective scrolling region is gaze scrolling enabled (e.g., responsive to gaze-based inputs) as will be described in more detail below and with reference to method(s) 800 and / or 1000. For example, in Fig. 7A, the second scrolling region 704c did not include a visual appearance (e.g., color, pattern, shading, brightness, and / or visual effect) before the computer system 101 detected gaze directed to the second scrolling region 704c. In Fig. 7B, in response to detecting gaze 708 directed to the second scrolling region 704c, the computer system 101 displays the second scrolling region 704c with a color or other visual appearance to emphasize the second scrolling region 704c relative to other regions (e.g., the first scrolling region 704b and the third region 704d) of the scrollable content (and / or the internet browsing user interface element 704a that includes the scrollable content). In some embodiments, thecomputer system 101 displays the second scrolling region 704c with the visual appearance for a predetermined amount of time (e.g., 1, 5, 10, 15, 30, 40, 50, or 60 seconds). In some embodiments, after the predetermined amount of time has elapsed, the computer system 101 does not display the second scrolling region 704c with the visual appearance as shown in Fig. 7C. In some embodiments, the computer system 101 displays the second scrolling region 704c with the visual appearance as long as gaze 708 is directed to the second scrolling region 704c. In some embodiments, and as will be described below, if the gaze 708 had been directed to the first scrolling region 704b, the computer system 101 would display the first scrolling region 704b with the visual appearance optionally analogous to and / or having one or more of the characteristics of displaying the second scrolling region 704c with the visual appearance as shown in Fig. 7B. In some embodiments, when the computer system 101 detects that gaze 708 is directed to the third region 704d, the computer system 101 does not display the third region 704d with the visual appearance because the third region 704d is not gaze scrolling enabled region as described in more detail with reference to method(s) 800 and / or 1000.

[0234] In some embodiments, in response to detecting that the gaze of the user is directed to the first scrolling region 704b or the second scrolling region 704c, the computer system 101 expands the respective region to which the gaze 708 is directed to as described in more detail with reference to method 800. For example, in Fig. 7A, the computer system 101 designates the second scrolling region 704c as responsive to gaze-only scrolling inputs. In Fig. 7B, in response to detecting gaze 708 directed to the second scrolling region 704c, the computer system 101 designates a fourth region 704h, different from and adjacent to the second scrolling region 704c, as responsive to gaze-only scrolling inputs. Thus, in some embodiments, and as shown in Fig. 7B, the computer system expands a size of a respective scrolling region responsive to gaze-only inputs to include the second scrolling region 704c and the fourth region 704h. In some embodiments, the computer system 101 expands the respective scrolling region in response to detecting the gaze 708 directed to second scrolling region 704c as described in more detail in method 800. In some embodiments, the computer system 101 expands the respective scrolling region in response to and / or while scrolling the scrollable content in accordance with the gaze directed to the second scrolling region 704c as described below and in more detail with reference to method 800.

[0235] In some embodiments, the computer system 101 implements the fourth region 704h as responsive to gaze-only scrolling inputs as long as gaze 708 is directed to the second scrolling region 704c or the fourth region 704h. In some embodiments, when the computersystem 101 no longer detects that gaze 708 is directed to the second scrolling region 704c or the fourth region 704h (e.g., the gaze 708 is directed to the third region 704d, different from the second scrolling region 704c and the fourth region 704h), the computer contracts the respective scrolling region (e.g., the computer system does not designate the fourth region 704h responsive to gaze-only scrolling inputs as shown in Fig. 7A. In some embodiments, and as will be described below, if the gaze 708 had been directed to the first scrolling region 704b, the computer system 101 expands the first scrolling region 704b to include a region different from and adjacent to the first scrolling region as responsive to gaze-only scrolling inputs.

[0236] In Fig. 7B, timer 724a indicates the amount of time gaze 708 has been directed to the second scrolling region 704c. For example, the computer system 101 determines that the duration of the gaze 708 directed to the second scrolling region 704c is less than a first time threshold 724b and in response, the computer system 101 does not scroll the scrollable content. Fig. 7B also includes speed indicator 722 indicative of the speed at which the computer system 101 scrolls the scrollable content. In Fig. 7B, speed indicator 722 has a zero value (e.g., “SO”) which indicates that the scrollable content is not yet being scrolled in response to the gaze 708 of the user.

[0237] Fig. 7C illustrates the computer system 101 scrolling the scrollable content in response to determining that the duration of the gaze 708 directed to the second scrolling region 704c exceeds the first time threshold 724b. As shown in Fig. 7C, in response to detecting the gaze 708 of the user directed to the second scrolling region 704c (e.g., the bottom region), the computer system 101 scrolls the scrollable content up to reveal additional scrollable content at the bottom of the internet browsing user interface element 704a. In some embodiments, and as will be described below, if the gaze 708 had been directed to the first scrolling region 704b (e.g., the top region), the computer system 101 would scroll the scrollable content 702 down to reveal additional scrollable content at the top of the internet browsing user interface element 704a. In some embodiments, the speed at which the computer system 101 scrolls the scrollable content is based on a location of the gaze 708 from an edge of the second scrolling region 704c. As shown in Fig. 7C, in response to detecting that a location of the gaze 708 is a first distance 726 from the top edge of the second scrolling region 704c, the computer system 101 scrolls the scrollable content at a first speed (e.g., “S2”) as indicated by speed indicator 722.

[0238] In some embodiments, the computer system 101 changes the speed at the which the scrollable content is scrolled based on a distance between the location of the gaze from a respective edge of a respective scrolling region. In Fig. 7D, the computer system detects thelocation of the gaze 708 is a second distance 730, greater than the first distance 726, from the top edge of the second scrolling region 704. In some embodiments, in response to detecting the location of the gaze 708 is the second distance 730 from the edge of the second scrolling region 704, the computer system 101 scrolls the scrollable content at a second speed (e.g., “S4”) as indicated by speed indicator 722. The second speed in Fig. 7D is greater than the first speed in Fig. 7C. In some embodiments, if the gaze 708 had been directed to the first scrolling region 704b, the computer system 101 would determine the location of the gaze 708 relative to the top region of the first scrolling region 704b. For example, when the computer system 101 detects the location of the gaze 708 closer to the top edge of the first scrolling region 704b (e.g., a first distance from the top edge of the first scrolling region 704b), the computer system 101 scrolls the scrollable content at a speed greater than a respective speed when the computer system 101 detects the location of the gaze 708 farther from the top region of the first scrolling region 704b (e.g., a second distance, greater than the first distance, from the top of the first scrolling region 704b).

[0239] In some embodiments, and as previously described, the scrollable content (and / or the internet browsing user interface element 704a that includes the scrollable content) includes additional content 716a as shown in Fig. 7E. The additional content 716a optionally includes embedded content, and / or selectable links to other content as described above. In some embodiments, the computer system 101 scrolls the additional content in a same manner (e.g., speed and / or direction) as the scrollable content. For example, in response to detecting the gaze 708 of the user directed to the second scrolling region 704c (e.g., the bottom region) in Fig. 7C, the computer system 101 scrolls the additional content 716a up to reveal additional representations of links to other content (e.g., articles) at the bottom of the internet browsing user interface element 704a. In some embodiments, while the computer system 101 scrolls the scrollable content in response to gaze 708 directed to a respective scrolling region (e.g., the first scrolling region 704b or the second scrolling region 704c), the computer system 101 moves the additional content 716a in accordance with scrolling the scrollable content (e.g., same speed and / or direction) as shown in Figs. 7B-7D. In some embodiments, while the computer system scrolls the additional content 716a in accordance with scrolling the scrollable content, the additional content 716a itself is separately scrollable as described below with respect to scrolling the additional content 716a in accordance with movement of a respective input element.

[0240] In some embodiments, while the computer system 101 scrolls the scrollable content in response to gaze 708 directed to the second scrolling region 704c as described above,the computer system 101 detects the gaze 708 moving from being directed to the second scrolling region 704c in Fig. 7D to being directed to a bottom region of additional content 716a, such as shown in Fig. 7E. In response, the computer system 101 stops scrolling the scrollable content (e.g., the scrolling speed is zero, “SO” as shown by indicator 722). In some embodiments, the additional content 716a is not responsive to gaze-only scrolling inputs similarly to the third region 704d as described above.

[0241] Fig. 7F illustrates that while the gaze 708 is directed to the bottom region of additional content 716a, the computer system 101 detects that a respective input element (e.g., described in more detail with reference to method 1000) is providing an input to scroll the additional content 716a, and in response, the computer system 101 scrolls the additional content 716a in accordance with movement of a respective input element (e.g., the hand 734 of the user of computer system 101) as shown in Fig. 7G. In some embodiments, the computer system 101 optionally scrolls the additional content 716a with a magnitude and / or direction corresponding to the movement of the hand 734 of the user (e.g., scrolls the scrollable content upward if a hand moves upward, and scrolls the scrollable content downward if the hand moves downward). For example, in Fig. 7G, the computer system 101 detects a gesture that includes hand 734 performing a pinch gesture (e.g., as described in more detail with reference to method(s) 800 and / or 1000) and movement of the hand 734 upwards while engaged in the pinch gesture (e.g., from a first location to a second location of the hand 744) while the gaze 708 of the user is directed to the bottom region of additional content 716a and, in response, the computer system 101 scrolls the additional content 716a up to reveal additional content at the bottom of the additional content 716a. Fig. 7G illustrates a speed (e.g., “S3”) corresponding to the movement of hand 734 as indicated by speed indicator 732. In some embodiments, although Fig. 7G illustrates that a duration of the gaze 708 is directed to the bottom region of the additional content 716a for less than time threshold 728b as shown by time 728a, the computer system 101 scrolls the additional content 716a in accordance with the movement of hand 734. In some embodiments, although Fig. 7G illustrates the location of gaze 708 directed to a respective location that is within the second scrolling region 704c that is responsive to gaze-only scrolling inputs as described above, in some embodiments, the computer system 101 scrolls the additional content 716a in response to an input including the movement of hand 734 and the gaze 708 of the user directed to the bottom region of the additional content 716a. In some embodiments, if the computer system detected movement of the hand 734 downwards while the gaze is directed to the additional content 716a, the computer system 101 would scroll the scrollable content 702up to reveal content at the top of the additional content 716a. It is understood that when the hand of the user is described as performing a gesture, the hand of the user is optionally performing an air gesture.

[0242] In some embodiments, the computer system 101 ceases scrolling the additional content 716a in response to detecting the gaze 708 of the user moving from being directed to the additional content 716a to being directed to the first scrolling region 704b or in response to detecting the respective input element (e.g., hand of the user) is no longer engaged (e.g., not providing an input to scroll the additional content 716a). For example, as illustrated in Fig. 7H, the computer system 101 stops scrolling the additional content 716a as indicated by speed indicator 732 with a zero value (e.g., “SO”) in response to the computer system 101 detecting an un-pinch hand 736.

[0243] In Fig. 7H, in response to detecting that the gaze 708 of the user is directed to the first scrolling region 704b, the computer system 101 designates a fifth region 704i responsive to gaze-only scrolling inputs in a manner similar to the manner described above with reference to the first scrolling region 704b. Fig. 7H also illustrates the timer 724a indicative of the amount of time gaze 708 has been directed to the first scrolling region 704b. For example, the computer system 101 determines that the duration of the gaze 708 directed to the first scrolling region 704b is less than the first time threshold 724b and in response, the computer system 101 does not scroll the scrollable content. Fig. 7H also includes speed indicator 722 indicative of the speed at which the computer system 101 scrolls the scrollable content. In Fig. 7H, speed indicator 722 has a zero value (e.g., “SO”).

[0244] Fig. 71 illustrates the computer system 101 scrolling the scrollable content in response to determining that the duration of the gaze 708 directed to the first scrolling region 704b exceeds the first time threshold 724b. As shown in Fig. 71, in response to detecting the gaze 708 of the user directed to the first scrolling region 704b (e.g., the top region), the computer system 101 scrolls the scrollable content down to reveal additional scrollable content at the top of the internet browsing user interface element 704a. In some embodiments, the computer system 101 detects the location of the gaze 708 is a distance 750 from the top edge of the first scrolling region 704b. In some embodiments, in response to detecting the location of the gaze 708 is the distance 750 from the top edge of the first scrolling region 704b, the computer system 101 scrolls the scrollable content in a manner similar to scrolling the scrollable content in response to the location of the gaze 708 within the second scrolling region 704c described in Fig.7D. For example, as illustrated in Fig. 71, the computer system 101 scrolls the scrollable content at a speed (e.g., “S4”) as indicated by speed indicator 722.

[0245] In some embodiments, the computer system 101 increases the speed at which the computer system 101 scrolls the scrollable content in response to a determination that the gaze is directed to content of a particular type (e.g., text-based content or image-based content) described below and in more detail with reference to method 800. For example, while the computer system 101 scrolls the scrollable content in response to gaze 708 directed to the first scrolling region 704b at a first speed (e.g., “S4”) as indicated by speed indicator 722 in Fig. 71 and as described above, the computer system 101 detects the gaze 708 moving from being directed to a first location within the first scrolling region 704b as shown in Fig. 71 to being directed to a second location within the first scrolling region 704b as shown in Fig. 7J. In some embodiments, the second location within the first scrolling region 704b to which the gaze 708 is directed includes image-based content 704e. In some embodiments, when the computer system 101 determines that the gaze 708 is directed to image-based content 704e in the first scrolling region 704b, the computer system 101 scrolls the scrollable content at a second speed (e.g., “S6”) as indicated by speed indicator 722. In some embodiments, the second speed is greater than the first speed in Fig. 71.

[0246] In some embodiments, while the computer system 101 scrolls the scrollable content in response to gaze 708 directed to image-based content 704e in the first scrolling region 704b as described above, the computer system 101 detects the gaze 708 moving from being directed to the first scrolling region 704b in Fig. 7J to being directed to the third region 704d, such as shown in Fig. 7K. In response, the computer system 101 stops scrolling the scrollable content (e.g., the scrolling speed is zero, “SO” as shown by indicator 722) and resets the gaze duration of gaze directed to the first scrolling region 704b to zero in Fig. 7K. In some embodiments, the third region is not responsive to gaze-only scrolling inputs as described above and in more detail with reference to method 800.

[0247] As described above, the computer system 101 changes the speed at which the computer system 101 scrolls the scrollable content in response to a determination that the gaze is directed to content of a particular type (e.g., text-based content or image-based content). For example, a determination that gaze is directed to image-based content is optionally based on detection of movement of the gaze from a first location corresponding to text-based content to a second location corresponding to image-based content. For example, determination that gaze is directed to text-based content is optionally based on detection of movement of the gaze from afirst location corresponding to image-based content to a second location corresponding to textbased content. In another example, a determination that gaze is directed to image-based content is optionally caused by scrolling, in that scrolling optionally changes the type of content displayed at a location corresponding to the respective location of the gaze (e.g., changing and / or revealing image-based content different from the previously displayed text-based content) where the computer system detects that the content at the gaze location is image-based content after the scrolling occurs. In another example, a determination that gaze is directed to text-based content is optionally caused by scrolling, in that scrolling optionally changes the type of content displayed at a location corresponding to the respective location of the gaze (e.g., changing and / or revealing text-based content different from the previously displayed image-based content) where the computer system detects that the content at the gaze location is text-based content after the scrolling occurs.

[0248] For example, as illustrated in Fig. 7L, in response to detecting that the gaze 708 of the user is directed to the second scrolling region 704c, the computer system 101 changes the visual appearance of the second scrolling region 704c and designates a respective region different from and adjacent to the second scrolling region 704c as responsive to gaze-only scrolling inputs in a manner similar to expanding and displaying the visual appearance of the second scrolling region 704c described above. Fig. 7L also illustrates the timer 724a indicative of the amount of time gaze 708 has been directed to the second scrolling region 704c. For example, the computer system 101 determines that the duration of the gaze 708 directed to the second scrolling region 704c is less than the first time threshold 724b and in response, the computer system 101 does not scroll the scrollable content. Fig. 7L also includes speed indicator 722 indicative of the speed at which the computer system 101 scrolls the scrollable content. In Fig. 7L, speed indicator 722 has a zero value (e.g., “SO”).

[0249] Fig. 7M illustrates the computer system 101 scrolling the scrollable content at a first speed (e.g., “S3”) as indicated by speed indicator 722 in response to determining that the gaze 708 is directed to text-based content. For example, the duration of the gaze 708 directed to the second scrolling region 704c exceeds the first time threshold 724b. As shown in Fig. 7M, the computer system 101 determines that the gaze 708 is directed to text-based content in the second scrolling region 704c, and in response, the computer system 101 scrolls the scrollable content at the first speed (e.g., “S3”) as indicated by speed indicator 722. In some embodiments, in response to detecting the location of the gaze 708 is a distance 752 from the edge of the second scrolling region 704c, the computer system 101 scrolls the scrollable content at the first speed(e.g., “S3”) as indicated by speed indicator 722. The first speed in Fig. 7M is greater than the respective speed in Fig. 7C in accordance with the determination that the distance 752 is greater than the distance 726, from the top edge of the second scrolling region 704c.

[0250] In some embodiments, while the computer system 101 scrolls the scrollable content at the first speed (e.g., “S3”) as indicated by speed indicator 722 in Fig. 7M, the respective location of gaze 708 is fixed (e.g., does not change or move). In some embodiments, scrolling changes the content displayed at a location corresponding to the respective location of the gaze. For example, the currently displayed portion of the scrollable content to which the gaze 708 of the user is directed changes from the text-based content in Fig. 7M to the imagebased content in Fig. 7N, and in response, the computer system 101 optionally changes (e.g., increases) the scrolling speed from the first speed (e.g., “S3”) as indicated by speed indicator 722 in Fig. 7M to the second speed (e.g., “S5”) as indicated by speed indicator 722 in Fig. 7N.

[0251] In some embodiments, while the computer system 101 scrolls the scrollable content at the second speed (e.g., “S5”) as indicated by speed indicator 722 in Fig. 7N, the respective location of gaze 708 is fixed (e.g., does not change or move). In some embodiments, the currently displayed portion of the scrollable content to which the gaze 708 of the user is directed changes from the image-based content in Fig. 7N to the text-based content in Fig. 70, and in response, the computer system 101 optionally changes (e.g., decreases) the scrolling speed from the second speed (e.g., “S5”) as indicated by speed indicator 722 in Fig. 7N to the first speed (e.g., “S3”) as indicated by speed indicator 722 in Fig. 70.

[0252] In some embodiments, the scrolling speed increases as the duration of the gaze 708 of the user directed to the second scrollable region 704c increases (e.g., length of time the gaze of the user is directed to the second scrollable region 704c). For example the duration of gaze 708 directed to the second scrollable region 704c has increased from Fig. 7N to Fig. 70, but still has not reached the second threshold 724c. From Fig. 70 to Fig. 7P, the duration of gaze 708 directed to the second scrollable region 704c has increased again, and has exceeded the second threshold 724c. In response the duration of gaze 708 exceeding the second threshold 724c, the computer system 101 changes (e.g., increases) the scrolling speed from the first speed (e.g., “S3”) as indicated by speed indicator 722 in Fig. 70 to a third speed (e.g., “S6”) as indicated by speed indicator 722 in Fig. 7P.

[0253] In some embodiments, while scrolling the scrollable content at a respective speed, the computer system determines that an end of the scrollable content is reached, and in response,the computer system decreases the speed at which the scrollable content is scrolled. For example, from Fig. 7P to Fig. 7Q, the duration of gaze 708 directed to the second scrollable region 704c has increased again, and in response the computer system 101 changes (e.g., increases) the scrolling speed from the third speed (e.g., “S6”) as indicated by speed indicator 722 in Fig. 7P to a fourth speed (e.g., “S8”) as indicated by speed indicator 722 in Fig. 7Q. In Fig. 7Q, while the computer system 101 scrolls the scrollable content at the fourth speed, the computer system determines that an end of the scrollable content is reached (e.g., when a boundary 704g or edge of the scrollable content is displayed), and in response, the computer system 101 changes (e.g., decreases) the scrolling speed from the fourth speed (e.g., “S8”) as indicated by speed indicator 722 in Fig. 7Q to a fifth speed (e.g., “SI”) as indicated by speed indicator 722 in Fig. 7R. In some embodiments, the computer system 101 slows the scrolling speed to a stop. From Fig. 7Q to Fig. 7R, the computer system 101 presents the scrollable content using a rubber band effect (e.g., as described with respect to method 800) at the edge of the internet browsing user interface element 704a when the boundary 704g of the scrollable content is reached.

[0254] In the example of Fig. 7R, the internet browsing user interface element 704a includes content 712c that is horizontally scrollable using gaze-based inputs. In some embodiments, the content 712c includes a collection of photos or other content. In some embodiments, while the computer system 101 scrolls the scrollable content in response to gaze 708 directed to the second scrollable region 704c as shown in Fig. 7R and described above, the computer system 101 detects the gaze 708 moving from being directed to the second scrolling region 704c in Fig. 7R to being directed to a right scrolling region 712b of content 712c, such as shown in Fig. 7S. In response, the computer system 101 optionally stops scrolling the scrollable content (e.g., the scrolling speed is zero, “SO” as shown by indicator 722).

[0255] As illustrated in Fig. 7S, in response to detecting that the gaze 708 of the user is directed to the right scrolling region 712b of content 712c, the computer system 101 expands and changes a visual appearance of the right scrolling region 712b in a manner similar to expanding and changing a visual appearance of the second scrolling region 704c described above. Fig. 7S also illustrates the timer 724a indicative of the amount of time gaze 708 has been directed to the right scrolling region 712b. For example, the computer system 101 determines that the duration of the gaze 708 directed to the right scrolling region 712b is less than the first time threshold 724b and in response, the computer system 101 does not scroll the content 712c.

[0256] Fig. 7T illustrates the computer system 101 scrolling the scrollable content in response to determining that the duration of the gaze 708 directed to the right scrolling region 712b exceeds the first time threshold 724b. In response to detecting the gaze 708 of the user directed to the right scrolling region 712b, the computer system 101 scrolls the content to the left at a first speed (e.g., “S3”) as shown by speed indicator 722 to reveal additional content on the right side of the content 712c. In some embodiments, the speed at which the computer system scrolls content 712c is based on a location of the gaze 708 within the right scrolling region 712b and / or duration of the gaze 708 directed to the right scrolling region 712b that is optionally analogous to scrolling the scrollable content in response to the location and / or duration of the gaze 708 directed the second scrolling region 704c as described above.

[0257] In some embodiments, the computer system 101 displays one or more user interface elements and / or virtual object visually overlaid on (or, optionally, in front of) the scrollable content including the scrollable regions. In some embodiments, when the computer system displays a user interface element overlaid on a scrollable region, the scrollable region is not responsive to scrolling inputs until the computer system 101 ceases to display the user interface element overlaid on the scrollable region. For example, in Fig. 7U, the computer system 101 detects a gesture that includes hand 738 performing a pinch gesture (e.g., similar to the gesture performed by hand 734 described above and in more detail with reference to method(s) 800 and / or 1000) while the gaze 708 of the user is directed to the side bar user interface button 706b (e.g., described above) and, in response, the computer system 101 expands internet browsing user interface element 704a to include a first menu user interface element 740 that includes a first list of options. For example, in Fig. 7V, the computer system 101 detects a gesture that includes a hand 738 performing a pinch gesture (e.g., similar to the gesture performed by hand 734 described above and in more detail with reference to method(s) 800 and / or 1000) while the gaze 708 of the user is directed to a second menu user interface element 742 of a first option of the list and, in response, the computer system 101 displays, via the display generation component 120, a second menu user interface element 742 overlaid on the internet browsing user interface element 704a. In some embodiments, the second menu user interface element 742 includes scrollable content (e.g., a scrollable list of options).

[0258] Fig. 7W illustrates that the computer system 101 does not scroll the scrollable content of the internet browsing user interface element 704a in response to determining that the duration of the gaze 708 directed to the second scrolling region 704c exceeds the first timethreshold 724b of timer 724a because the second menu user interface element 742 is overlaid on the second scrolling region 704c.

[0259] Fig. 7X illustrates that while the gaze 708 is directed to the bottom region of the second menu user interface element 742, the computer system 101 detects a gesture that includes hand 738 performing a pinch gesture (e.g., as described in more detail with reference to method(s) 800 and / or 1000) and movement of the hand 738 upwards (e.g., from a first location to a second location of the hand 746) while the gaze 708 of the user is directed to the bottom region of the second menu user interface element 742 as shown in Fig. 7Y. In some embodiments, in response to detecting the gesture, the computer system 101 scrolls the scrollable content of the second menu user interface element 742 up to reveal additional content at the bottom region of the second menu user interface element 742 as shown in Fig. 7Y.

[0260] In some embodiments, although Fig. 7Y illustrates that a duration of the gaze 708 is directed to the bottom region of the second menu user interface element 742 for less than time threshold 728b as shown by time 728a, the computer system 101 scrolls the scrollable content of the second menu user interface element 742 in accordance with the movement of the hand 738. Fig. 7Z illustrates that the computer system 101 does not scroll content 712c in response to determining that the duration of the gaze 708 directed to the right scrolling region 712b of content 712c exceeds the first time threshold 724b of timer 724a because the second menu user interface element 742 is overlaid on the content 712c.

[0261] In some embodiments, the computer system 101 displays, via the display generation component 120, a user interface element that, when selected, causes the computer system 101 to set a user-defined scrolling speed. For example, in Fig. 7AA, the computer system 101 detects a gesture that includes a hand 738 performing a pinch gesture (e.g., as described in more detail with reference to method(s) 800 and / or 1000) while the gaze 708 of the user is directed to a settings user interface button 710 or virtual object optionally located above the internet browsing user interface element 704a within the three-dimensional environment 700. In some embodiments, in response to detecting the gesture, the computer system 101 displays, via the display generation component 120, a settings user interface element 748a as shown in Fig. 7BB. In some embodiments, the settings user interface element 748a includes a slider element 748b that, when selected, causes the computer system 101 to set a scrolling speed at which the computer system 101 scrolls the scrollable content as described in more detail with reference to method 800. For example, in Fig. 7BB, the computer system detects a gesture that includes hand 738 performing a pinch gesture followed by movement (e.g., as described in moredetail with reference to method(s) 800 and / or 1000) while the gaze 708 of the user is directed to the slider element, and in response, the computer system sets the scrolling speed to correspond to the user-defined scrolling speed using the slider element 748b.

[0262] Figure 8 is a flowchart illustrating a method in which a computer system scrolls scrollable content in response to gaze-based inputs, in accordance with some embodiments. In some embodiments, the method 800 is performed at a computer system (e.g., computer system 101 in Fig. 1 A such as a tablet, smartphone, wearable computer, or head mounted device) including a display generation component (e.g., display generation component 120 in Figs. 1, 3, and 4) (e.g., a heads-up display, a display, a touchscreen, and / or a projector) and one or more cameras (e.g., a camera (e.g., color sensors, infrared sensors, and other depth-sensing cameras) that points downward at a user’s hand or a camera that points forward from the user’s head). In some embodiments, the method 800 is governed by instructions that are stored in a non- transitory computer-readable storage medium and that are executed by one or more processors of a computer system, such as the one or more processors 202 of computer system 101 (e.g., control unit 110 in Fig. 1 A). Some operations in method 800 are, optionally, combined and / or the order of some operations is, optionally, changed.

[0263] In some embodiments, a method 800 is performed at a computer system in communication with a display generation component and one or more input devices, such as computer system 101a in communication with display generation component 120 as shown in Fig. 7A. For example, a mobile device (e.g., a tablet, a smartphone, a media player, or a wearable device), or a computer or other electronic device. In some embodiments, the display generation component is a display integrated with the electronic device (or, optionally, a touch screen display), external display such as a monitor, projector, television, or a hardware component (or, optionally, integrated or external) for projecting a user interface or causing a user interface to be visible to one or more users, etc. In some embodiments, the one or more input devices include an electronic device or component capable of receiving a user input (e.g., capturing a user input, and / or detecting a user input.) and transmitting information associated with the user input to the computer system. Examples of input devices include a touch screen, mouse (e.g., external), trackpad (or, optionally, integrated or external), touchpad (or, optionally, integrated or external), remote control device (e.g., external), another mobile device (e.g., separate from the computer system), a handheld device (e.g., external), a controller (e.g., external), a camera, a depth sensor, an eye tracking device, and / or a motion sensor (e.g., a hand tracking device, a hand motion sensor), microphone for capturing voice commands or other audio input, etc. In someembodiments, the computer system is in communication with a hand tracking device (e.g., one or more cameras, depth sensors, proximity sensors, touch sensors (e.g., a touch screen, trackpad)). In some embodiments, the hand tracking device is a wearable device, such as a smart glove. In some embodiments, the hand tracking device is a handheld input device, such as a remote control or stylus.

[0264] In some embodiments, while displaying, via the display generation component, scrollable content including a first region of the scrollable content, such as region 704c in Fig. 7A, the computer system detects (802), via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content, such as gaze 708 directed to region 704c in Fig. 7B. In some embodiments, the computer system displays the scrollable content in a three- dimensional environment (e.g., in a manner similar to displaying a virtual object in a three- dimensional environment as described with reference to the scene 105 in Fig. 1A). For example, the three-dimensional environment is optionally generated, displayed, or otherwise caused to be viewable by the computer system. In some embodiments, the three-dimensional environment is an extended reality (XR) environment such as a virtual reality (VR) environment, a mixed reality (MR) environment, or an augmented reality (AR) environment. In some embodiments, the scrollable content is a user interface element of an application, such as a web browser application or an application other than the web browser application, such as an electronic reading application, media content application, or a platform control application. For example, the user interface element is optionally a window or volume configured to present two-dimensional and / or three-dimensional content that is optionally bounded to the window. In some embodiments, the user interface element is the two-dimensional and / or three-dimensional content associated with the window. In some embodiments, the content corresponds to web content, a word processing document, a spreadsheet document, email content, presentation content, application content, or other displayed virtual objects. In some embodiments, the scrollable content includes visual and / or textual content (e.g., images and text) that is not all displayed on a respective content window (or, optionally, volume) at once (e.g., a portion of the visual and / or textual content are not visible on the respective content window at any given moment in time). Thus, in some embodiments, in response to detecting the gaze of the user directed to the first region of the scrollable content (e.g., described in further detail below), the computer system scrolls content that is displayed on the scrollable content such that portions of the content that were not previously visible on the scrollable content become visible, while portions of the content on the scrollable content that were previously visible are no longervisible. It is understood that although the embodiments described herein are directed to the first region of the scrollable content, such functions and / or characteristics, optionally apply to other scrolling regions as described below. For example, the scrollable content optionally includes the first region located at the bottom portion of the scrollable content. In some embodiments, in response to detecting that the gaze of the user is directed to the bottom region of the scrollable content, the computer system scrolls the content of the scrollable content up, such that portions of the content that are below the currently displayed content on the scrollable content become visible. In some embodiments, the computer system detects the gaze of the user directed to the first region of the scrollable content for a period of time greater than a time threshold (e.g., 0.02, 0.05, 0.1, 0.2, 0.25, 0.3, 0.5, 1, 2, 3, or 5 seconds). In some embodiments, the first region is located at the top portion of the scrollable content. In some embodiments, the scrollable content concurrently includes a second (e.g., scrolling) region located at the top portion of the scrollable content and the first region location at the bottom portion of the scrollable content. In some embodiments, in response to detecting that the gaze of the user is directed to the top region of the scrollable window, the computer system scrolls the content of the scrollable content down, such that portions of the content that are above the currently displayed content on the scrollable content become visible. In some embodiments, the first region of the scrollable content is located at the right (or, optionally, left) side portion of the scrollable content. In some embodiments, in response to detecting that the gaze of the user is directed to the right (or, optionally, left) side region of the scrollable window, the computer system scrolls the content of the scrollable content to the left (or, optionally, right, respectively), such that portions of the content that are to the right (or, optionally, the left) the currently displayed content on the scrollable content become visible. In some embodiments, the first region of the scrollable content is not delineated with any visual indicators or visual boundaries. Instead, the computer system optionally detects that the gaze of the user is beyond a threshold distance from the center of the scrollable content in order determine that the gaze of the user is within the first region of the scrollable content. For instance, if the first region is located at the bottom of the scrollable content, then the computer system optionally begins to scroll the scrollable content in response to detecting that the gaze of the user is beyond a threshold distance (e.g. 1, 5, 10, 15, 20, 30, 40, 50, or 100 cm and / or 1%, 5%, 10%, 20%, 30%, 40%, 60%, or 75% length and / or radial length) below the center of the scrollable content. In some embodiments the threshold distance is proportional to the size of the scrollable content. In some embodiments, the computer system detects that the gaze of the user is beyond a threshold distance in terms of degrees, for instance, in accordance with an angle (e.g., 0.5, 2.5, 5, 8, 10, 12, 15, 20, 40, or 50 degrees) defined by aline (e.g., measuring 0.1, 0.5, 1, 1.5, 2, 3, 5, or 10 m) between the user’s viewpoint and the center of the scrollable content and a line defined by a line between the user’s viewpoint and the gaze point of the user (e.g., measuring 1, 5, 10, 15, 20, 30, 40, 50, or 100 cm). In some embodiments, the computer system scrolls the scrollable content in response to detecting that the gaze of the user is directed to the first region of the scrollable content the without requiring additional user input (e.g., without a separate gesture input or without explicit interaction such as interacting with a scroll bar user interface object).

[0265] In some embodiments, in response to detecting the gaze of the user directed to the scrollable content (804), such as gaze 708 directed to region 704c, in accordance with a determination that the gaze is directed to a first type of content in the first region, the computer system scrolls the scrollable content at a first speed (806), such as text-based content in region 704c and scrolling at a speed as indicated by speed indicator 722 in Fig. 70. In some embodiments, in response to detecting the gaze of the user directed to the scrollable content (804), in accordance with a determination that the gaze is directed to a second type of content in the first region, wherein the second type of content is different from the first type of content, such as image-based content 704e in Fig. 7A, the computer system scrolls the scrollable content at a second speed, different from the first speed, such as image-based content in region 704c and scrolling at a speed as indicated by speed indicator 722 in Fig. 7N. In some embodiments, the computer system changes the speed at which the content is scrolled within the scrollable content based on the type of content that is displayed in the first region of the scrollable content. For instance, if the computer system determines that the first region only includes text (e.g., does not include an image or other type of content), the computer system optionally causes the content in the scrollable content to be scrolled at a first speed (e.g., 0.1, 1, 5, 10, 15, 20, 30, 40 50, or 100 cm / s). In the event that the computer system determines that the first region of the scrollable content includes an image or a portion of an image (or, optionally, in addition to text), the computer system optionally causes the content in the scrollable content be scrolled at a second speed that is faster than the first speed so that the user can view the entirety of an image more quickly than if the content were scrolled at the first speed. In some embodiments, given the type of content, the computer system correlates the same location of the gaze in the first region with a different respective scrolling speed from multiple scrolling speeds including the first speed and the second speed as determined by the computer system and / or defined by the user of the computer system based on whether that location includes the first type of content or the second type of content. In some embodiments, in addition to text and / or images, the first type andsecond type of content include but are not limited to: video content, metadata content associated with the content being displayed on the scrollable content in the first region, or content having different visual characteristics (e.g., different brightness, color, opacity, and / or font size).

[0266] Scrolling content at different speeds based on the type of content being scrolled as well as based on the location of the gaze of the user minimizes input errors from the user associated with the user misinterpreting content due to the speed at which it is being scrolled and facilitates more efficient user interaction with the content (e.g., less overall time spent providing scrolling inputs) while avoiding errors in scrolling, thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0267] In some embodiments, in response to detecting the gaze of the user directed to the scrollable content, in accordance with a determination that the gaze is directed to a second region of the scrollable content, such as region 704d in Fig. 7K, different from the first region, the computer system forgoes scrolling the scrollable content based on the gaze of the user directed to the scrollable content, such as indicated by speed indicator 722 in Fig. 7K. As described herein, the scrollable content is optionally a user interface element of an application, such as a window (or, optionally volume) of a web browser application or other application described above. In some embodiments, the scrollable content includes the first region (e.g., described herein) that, when the computer system detects the gaze of the user directed to the first region, the computer system scrolls content displayed in the first region. In some embodiments, the scrollable content includes a second region (e.g., adjacent to the first region) that, when the computer system detects the gaze of the user directed to the second region, the computer system does not scroll content displayed in the second region. In some embodiments, the second region of the scrollable content is optionally not responsive to gaze-only input (e.g., not including input from one or more portions of the user other than those portions providing the attention gaze input).

[0268] In some embodiments, the second region and the first region are part of a user interface element (e.g., a same user interface element such as a same window or same volume). In some embodiments, the second region and the first region occupy different portions of the user interface element. For example, a first potion of the user interface element that includes the first region optionally does not include the second region. In some embodiments, and as described in more detail with reference to method 1000, scrolling the scrollable content is performed by the computer system in response to the computer system detecting a respectiveinput element providing an input to scroll as described in more detail with reference to method 1000. For example, the computer system optionally detects a non-gaze-based input directed to the second region, such as selection via a pinch air gesture in which the gaze of the user is optionally directed to the second region while one or more portions of the user (e.g., a hand, arm, and / or finger) of the user performs the pinch air gesture as described in more detail with reference to method 1000.

[0269] In some embodiments, while the computer system scrolls the scrollable content at the respective speed, the computer system detects that the gaze of the user is directed to the second region of the scrollable content (e.g., more than a threshold distance away from the first region of the scrollable content). In some embodiments, in response to detecting that the gaze of the user is directed to the second region of the scrollable content, the computer system stops scrolling the scrollable content at the respective speed. For example, after detecting that the gaze of the user is directed to the second region (and / or detecting that the gaze of the user is directed away from the first region), the computer system optionally scrolls the scrollable content at a reduced respective speed (e.g., the speed of scrolling the scrollable content is gradually reduced until scrolling stops). In another example, after detecting that the gaze of the user is directed to the second region (and / or detecting that the gaze of the user is directed away from the first region), the computer system optionally suddenly decreases the speed at which the scrollable content is scrolled (e.g., scrolling the scrollable content abruptly stops).

[0270] In some embodiments, while the gaze of the user is directed to the second region of the scrollable content, the computer system detects the respective input element providing an input to scroll as described in more detail with reference to method 1000, and in response to detecting the respective input element, the computer system scrolls the scrollable content despite the second region of the scrollable content being not responsive to gaze-only input to scroll. Forgoing scrolling content based on a determination that the gaze of the user is directed to a second region of the scrollable content reduces errors in the interaction between the user and the computer system (e.g., by avoiding unintentional scrolling of content), thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0271] In some embodiments, the first type of content is text-based content, such as textbased content in region 704c in Fig. 70, (e.g., alphanumeric characters and / or symbols), and in some embodiments, the second type of content is image-based content (e.g., photos, videos, two-dimensional virtual objects, and / or three-dimensional virtual objects), such as image-based content 704e as shown in Fig. 7J. Scrolling content at different speeds based on whether the content is text-based content or image-based content increases the readability of content displayed by the computer system and minimizes input errors from the user associated with the user misinterpreting content due to the speed at which it is being scrolled and facilitates more efficient user interaction with the content (e.g., less overall time spent providing scrolling inputs) while avoiding errors in scrolling, thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0272] In some embodiments, scrolling the scrollable content at a respective speed includes, while the gaze of the user is directed to a respective location (e.g., a respective location in an environment that includes the scrollable content), in accordance with a determination that the respective location includes the first type of content, scrolling the scrollable content at the first speed (e.g., as described above) such as scrolling at speed indicated by speed indicator 722 as shown in Fig. 7N. For example, the computer system optionally determines that the gaze of the user is directed to a first location of the first region of the scrollable content. In some embodiments, the computer system detects that the respective location of the gaze (e.g., in the environment that includes the first region of the scrollable content) is fixed (e.g., does not change or move). In some embodiments, while the location of the gaze is fixed, the scrolling operation is ongoing, causing the scrollable content to scroll, such that portions of the scrollable content that were not previously visible become visible, while portions of the scrollable content that were previously visible are no longer visible. For example, scrolling optionally changes the content displayed at a location corresponding to the respective location of the gaze (e.g., changing and / or revealing a second type of content different from the previously displayed first type of content). In some embodiments, when a respective portion of the scrollable content that is visible corresponds to the respective location of the gaze includes a first type of content, the computer system scrolls the scrollable content at the first speed as described herein. In some embodiments, when the respective portion of the scrollable content that is visible corresponds to a second type of content, the computer system scrolls the scrollable content at the second speed as described herein.

[0273] In some embodiments, scrolling the scrollable content at a respective speed includes, while the gaze of the user is directed to a respective location (e.g., a respective location in an environment that includes the scrollable content), while scrolling the scrollable content atthe first speed, in accordance with a determination that the content at the respective location changes from including the first type of content to including the second type of content, such as changing from image-based content in region 704c, as shown in Fig. 7N to text-based content in region 704c, as shown in Fig.70 (e.g. due to the scrolling of the content causing different content to be displayed at the location to which the gaze of the user is directed), the computer system changes the respective speed from the first speed to the second speed (e.g., as described above with reference to scrolling the scrollable content at the second speed, different from the first speed and / or as shown in Figs. 7M and 7N), such as the respective speed shown by indicator 722 in Fig. 70. For example, the content to which the gaze of the user is directed is optionally the first type of content before scrolling. In some embodiments, the computer system scrolls the scrollable content at the first speed in response to the determination that the gaze of the user is directed to the first type of content. In some embodiments, scrolling the scrollable content in response to the gaze directed to the first region includes scrolling through a respective portion of the scrollable content and if the respective portion of the scrollable content includes the second type of content, the computer system scrolls the scrollable content at the second speed. In some embodiments, the gaze of the user is maintained at a location of the first region and the currently displayed portion of the scrollable content to which the gaze of the user is directed changes from the first type of content to the second type of content, and in response, the computer system optionally changes the scrolling speed from the first speed to the second speed. For example, the computer system optionally gradually changes the speed of scrolling from the first speed to the second speed. In another example, the computer system optionally suddenly changes the speed of scrolling from the speed to the second speed. Scrolling content and changing the speed at which the content is scrolled based on whether the content is a first type or a second type increases the readability of content displayed by the computer system and minimizes input errors from the user associated with the user misinterpreting content due to the speed at which it is being scrolled and facilitates more efficient user interaction with the content (e.g., less overall time spent providing scrolling inputs) while avoiding errors in scrolling, thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0274] In some embodiments, scrolling the scrollable content at a respective speed includes, in accordance with a determination that a location of the gaze of the user directed to the first region is a first distance from an edge (e.g., top, bottom, left, or right) of the first region,scrolling the scrollable content at a third speed, such as distance 726 as shown in Fig. 7C. In some embodiments, the first region is substantially rectangular (or, optionally, square) having a top edge, a bottom edge (or, optionally, opposite the top edge), a left edge, and a right edge (or, optionally, opposite the left edge). In some embodiments, scrolling the scrollable content at the third speed is different (e.g., faster or slower) from scrolling the scrollable content at the first speed, the second speed, or other speed. In some embodiments, scrolling the scrollable content at the third speed is the same as scrolling the scrollable content at the first speed, the second speed, or other speed. In some embodiments, scrolling the scrollable content at the third speed includes applying an absolute modifier (e.g., increase or decrease the speed by 5, 7, 10, 15, 20, or 30 cm / s) or applying a relative modifier to the respective speed (e.g., the first speed, the second speed, or other speed plus or minus 5, 7, 10, 15, 20, or 30 cm / s). For example, while the computer system is scrolling the scrollable content at a first speed, and while the computer system detects the gaze of the user moving towards a respective location that is within a threshold distance (e.g., 0.1, 0.25, 0.5, 0.75, 0.9, 1, 1.5, 2, 3, 5, or 10 cm) from the edge of the first region, the computer system optionally scrolls the scrollable content at the third speed, wherein the third speed increases relative to the first speed as the computer system detects that the location of the gaze is directed to (and / or moving towards) the respective location that is within the threshold distance from the edge of the first region.

[0275] In some embodiments, scrolling the scrollable content at a respective speed includes, in accordance with a determination that the location of the gaze of the user directed to the first region is a second distance from an edge of the first region, different from the first distance, scrolling the scrollable content at a fourth speed, different from the third speed, such as distance 730 as shown in Fig. 7D.In some embodiments, the smaller the distance of the location of the gaze of the user from the edge of the first region, the greater the speed of scrolling the scrollable content (e.g., speed is increased). For example, the second distance is less than the first distance (e.g., closer to a bottom edge of the first region). In some embodiments, when the computer system determines that the location of the gaze of the user directed to the first region is the second distance from the edge of the first region (e.g., closer to the bottom edge of the first region), the computer system scrolls the scrollable content at the fourth speed which is greater than the third speed at which the computer system scrolls the scrollable content when the location of the gaze is the first distance from the edge. It is understood that although the embodiments described herein are directed to the bottom edge of the first region, such functions and / or characteristics, optionally apply to other edges, such as the top edge, left edge, and / orright edge. In some embodiments, such functions and / or characteristics optionally apply to only one edge (e.g., the bottom edge of the first region) and not the other edges (e.g., the top edge, the left edge, and / or the right edge). In some embodiments, the computer system determines that the gaze of the user is within a threshold distance (e.g., 0.1, 0.25, 0.5, 0.75, 0.9, 1, 1.5, 2, 3, 5, or 10 cm) from the edge of the first region, and in response to the determination that the gaze is within the threshold distance from the edge of the first region, the speed at which the computer system scrolls the scrollable content is increased. In some embodiments, the computer system determines that the location in the first region that the gaze is direct to is greater than the threshold distance, and in response, the speed at which the computer system scrolls the scrollable content is not increased and optionally remains at a respective speed.

[0276] Changing the speed at with the computer system scrolls the scrollable content in response to a location of the gaze of the user relative to the edge of the first region provides quick access to scrollable content and facilitates more efficient user interaction with the content (e.g., less overall time spent providing scrolling inputs) while avoiding errors in scrolling, thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0277] In some embodiments, scrolling the scrollable content at a respective speed includes, in accordance with a determination that the gaze of the user is directed to the first region for a first period of time, scrolling the scrollable content at a third speed, such as the duration of gaze 708 directed to region 704c exceeding the first threshold 724b in Fig. 70. In some embodiments, scrolling the scrollable content at the third speed is analogous to and / or has one or more of the characteristics of scrolling the scrollable content at the third speed as described above with reference to the determination that the location of the gaze of the user directed to the first region is the first distance from the edge. For example, while the computer system is scrolling the scrollable content at a first speed, and while the computer system detects the gaze of the user directed to the first region for the first period of time, the computer system optionally scrolls the scrollable content at the third speed, wherein the third speed increases relative to the first speed when the computer system detects that the period of time the gaze is detected as directed to the first region for longer than a first duration threshold as will be described herein.

[0278] For example, the computer system optionally detects that the gaze of the user is directed to the first region for the first period of time below a first duration threshold (e.g., 0.05,0.1, 0.2, 0.25, 0.3, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.5, 2, 2.5, 3, 5, 10, or 30 seconds). In some embodiments, the first period of time starts at a moment when the computer system detects a direction of the user’s gaze directed to the first region. In some embodiments, the first period of time starts once the gaze settles in the first region for a predetermined amount of time (e.g., 0.05, 0.1, 0.2, 0.25, 0.3, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.5, 2, 2.5, 3, 5, 10, or 30 seconds). In some embodiments, the computer system determines that the gaze of the user has moved from being directed to a first location within the first region to a second location within the first region, and in response, the computer system does not restart the first period of time. In some embodiments, the first period of time starts at a moment when the computer system detects the gaze of the user being directed to the first location within the first region. In some embodiments, the computer system restarts the first period of time when the computer system determines that the direction of the user’s gaze is directed away from the first region.

[0279] In some embodiments, scrolling the scrollable content at a respective speed includes, in accordance with a determination that the gaze of the user is directed to the first region for a second period of time (e.g., longer than the first period of time), scrolling the scrollable content at a fourth speed, different from the third speed (e.g., faster than the third speed), such as the duration of gaze 708 directed to region 704c exceeding a second threshold in Fig. 7P. In some embodiments, scrolling the scrollable content at the fourth speed includes applying an absolute modifier (e.g., increase or decrease the speed by 5, 7, 10, 15, 20, or 30 cm / s) or applying a relative modifier to the respective speed (e.g., the first speed, the second speed, the third speed, or other speed plus or minus 5, 7, 10, 15, 20, or 30 cm / s). For example, while optionally scrolling the scrollable content at the third speed, and while the gaze of the user remains directed to the first region, and in accordance with a determination that the gaze of the user is directed to the first region for a second period of time (e.g. a duration of the gaze of the user has exceeded the first duration threshold described above), the computer system optionally scrolls the scrollable content at a fourth speed, different from the third speed.

[0280] In some embodiments, the computer system scrolls the scrollable content at a speed that optionally corresponds to the duration of gaze directed to the first region (e.g., increasing the speed at with the computer system scrolls the scrollable content). In some embodiments, when the computer system determines that the duration of the gaze of the user has exceeded the first duration threshold described herein, the computer system scrolls the scrollable content at the fourth speed which is greater than the third speed at which the computer systemscrolls the scrollable content when the duration of the gaze is below the first duration threshold as described herein.

[0281] In some embodiments, scrolling the scrollable content at a respective speed that optionally corresponds to the duration of the gaze directed to the first region is irrespective of whether or not the location of the gaze changes including whether or not the distance of the location of the gaze from the edge of the first region changes as described above. Changing the speed at with the computer system scrolls the scrollable content in response to a duration of the gaze of the user directed to the first region provides quick access to scrollable content and facilitates more efficient user interaction with the content (e.g., less overall time spent providing scrolling inputs) while avoiding errors in scrolling, thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0282] In some embodiments, while displaying the scrollable content including the first region, and while the gaze of the user is directed away from the first region of the scrollable content, the computer system detects the gaze of the user directed to the first region of the scrollable content, such as gaze 708 directed to region 704c in Fig. 7B. In some embodiments, the computer system determines that the gaze of the user is directed to a location in the three- dimensional environment that does not correspond to the first region of the scrollable content. For example, the location optionally corresponds to the second region of the scrollable content that is optionally not responsive to gaze-only input. In another example, the location optionally corresponds to a user interface element different from the scrollable content.

[0283] In some embodiments, in response to detecting that the gaze of the user is directed to the first region of the scrollable content, in accordance with a determination that the gaze of the user is directed to the first region of the scrollable content for less than a first duration threshold (e.g., 0.05, 0.1, 0.2, 0.25, 0.3, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.5, 2, 2.5, 3, 5, 10, or 30 seconds), the computer system forgoes scrolling the scrollable content, such as the duration of gaze 708 directed to region 704c below a first threshold 724b in Fig. 7B.

[0284] In some embodiments, in response to detecting that the gaze of the user is directed to the first region of the scrollable content, in accordance with a determination that the gaze of the user is directed to the first region of the scrollable content for longer than the first duration threshold, the computer system scrolls the scrollable content (as described above with referenceto scrolling the scrollable content at a respective speed in accordance with the determination that the gaze of the user is directed to the first region for a respective period of time longer than the first duration threshold, and / or as shown in Figs. 7B and 7C), such as the duration of gaze 708 directed to region 704c exceeding the first threshold 724b in Fig. 7C.

[0285] For example, the computer system optionally detects the gaze of the user directed to the first region for a period of time greater than the first duration threshold. In some embodiments, the period of time starts at a moment when the computer system detects a direction of the user’s gaze directed to the first region. In some embodiments, the period of time starts once the gaze settles in the first region for a predetermined amount of time (e.g., 0.05, 0.1, 0.2, 0.25, 0.3, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.5, 2, 2.5, 3, 5, 10, or 30 seconds).

[0286] For example, the computer system optionally scrolls the scrollable content at a respective speed that is based on a location of the gaze of the user relative to the edge of the first region and / or the type of content as described above. For example, the computer system determines that the user is reading and / or scanning the scrollable content based on detected gaze movement, and optionally scrolls the scrollable at a respective speed as described above. In some embodiments, the computer system determines lack of movement of the gaze of the user (e.g., the computer system no longer detects movement of the gaze directed to the first region), and in response, the computer system ceases scrolling the scrollable content.

[0287] Scrolling the scrollable content in response to gaze directed to the first region and doing so when the gaze is directed to the first region for longer than the first duration threshold provides confirmation that the user intends to scroll the scrollable content, thereby reducing errors in the interaction between the user and the computer system (e.g., avoiding unintentional scrolling due to unintentional gaze) and reducing inputs needed to correct such errors and conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0288] In some embodiments, while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region, in accordance with a determination that the gaze of the user is directed to a second region, different from and adjacent to the first region, the computer system continues scrolling the scrollable content, such as region 704h in Fig. 7B. In some embodiments, while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region, in accordance with adetermination that the gaze of the user is directed to a third region, different from the first region and the second region, the computer system ceases scrolling the scrollable content, such as region 704d in Fig. 7K.

[0289] In some embodiments, the first region of the scrollable content is a region designated by the computer system as responsive to both gaze-only input scrolling (e.g., not including input from one or more portions of the user other than those portions providing the gaze input to scroll) and non-gaze-based scrolling, such as via a respective input element providing an input to scroll while the gaze of the user is optionally directed to the first region as described in more detail with reference to method 1000. In some embodiments, while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region, the computer system detects that the gaze of the user has moved from being directed to the first region to being directed to a second region, different from and adjacent to the first region, and in response to detecting that the gaze of the user has moved from being directed to the first region to being directed to the second region, the computer system continues scrolling the scrollable region. Thus, in some embodiments, while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region, the computer system implements the second region as a scrolling region (e.g., responsive to gaze- only scrolling input) that would otherwise not be implemented as a scrolling region if the computer system was not scrolling the scrollable content in accordance with the gaze directed to the first region. For example, the computer system optionally expands the scrolling region to include the first region and the second region of the scrollable content in response to (and / or while scrolling the scrollable content in accordance with the gaze directed to the first region).

[0290] In some embodiments, the first region encompasses a first portion / area of the scrollable content, and the second region encompasses a second portion / area of the scrollable content, different from the first portion / area of the scrollable content and adjacent to the first portion / area of the scrollable content. For example, the first region and the second region optionally share an invisible (or, optionally, joint) boundary. In some embodiments, the computer system does not display a visual representation of the boundaries of the first region and / or the second region. In some embodiments, the computer system displays a visual indication that the particular portion of the scrollable content (e.g., the first region) is scrollable via gaze-only input as described herein.

[0291] In some embodiments, when the computer system detects that the gaze is directed to a third region, outside of the first region and the second region (e.g., beyond the jointboundary of the first region and the second region), the computer system stops scrolling the scrollable content. Expanding a respective scrolling region of the scrollable content in response to gaze directed to the first region enables scrolling via gaze (e.g., expands the first region to receive scrolling inputs), thereby reducing errors in the interaction between the user and the computer system and facilitating more efficient user interaction with the content (e.g., less overall time spent providing scrolling inputs), thereby conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0292] In some embodiments, while displaying the scrollable content, and while the gaze of user is directed to the first region, such as gaze directed to region 704b, the computer system detects the gaze of the user moving from the first region to a second region, different from and adjacent to the first region, such as the region to which the gaze 708 is directed to in Fig. 7J. In some embodiments, the second region is analogous to and / or includes one or more characteristics of the second region that is different from and adjacent to the first region described above. In some embodiments, in response to (and / or while) detecting the gaze of the user moving from the first region to the second region, in accordance with a determination that the scrollable content was scrolling prior to detecting the gaze of the user moving from the first region to the second region, the computer system continues scrolling the scrollable content, such as shown in Fig. 71 where the computer system was scrolling the scrollable content.

[0293] In some embodiments, the second region is responsive to gaze-only input(s) to scroll when the computer system was scrolling the scrollable content in accordance with the gaze directed to the first region. In some embodiments, the computer system continues to scroll the scrollable content as long as the detected movement of the gaze of the user is directed to the first region or the second region (e.g., has not moved to the third region that is different from the first region and the second region as described above).

[0294] In some embodiments, in response to (and / or while) detecting the gaze of the user moving from the first region to the second region, in accordance with a determination that the scrollable content was not scrolling prior to detecting the gaze of the user moving from the first region to the second region, the computer system forgoes scrolling the scrollable content, such as the region to which the gaze 708 is directed to in Fig. 7K.

[0295] In some embodiments, the computer system did not scroll the scrollable content in accordance with the detected gaze of the user directed to the first region before detecting the gaze of the user moving from the first region to the second region. In some embodiments, when the computer system determines that the duration of the gaze directed to the first region is below a respective duration threshold (e.g., described above and with reference to method 1000), the computer system does not scroll the scrollable content. Thus, in some embodiments, the computer system does not designate the second region as responsive to gaze-only input(s) to scroll the scrollable content. For example, the computer system optionally does not expand the first scrolling region to include the second region. Thus, in some embodiments, the computer system does not scroll the scrollable content in response to detecting the gaze of the user moving from the first region to the second region that would otherwise be implemented as responsive to gaze-only input(s) to scroll the scrollable content if the computer system was scrolling the scrollable content in accordance with the gaze directed to the first region.

[0296] Continuing or forgoing scrolling the scrollable content in response to detecting the gaze of the user moving to a respective region adjacent to a scrolling region and in accordance with a determination that the scrollable content was scrolling prior to detecting the gaze moving to the respective region prevents unintentional scrolling, thereby reducing errors in the interaction between the user and the computer system (e.g., avoiding unintentional scrolling due to unintentional gaze) and reducing inputs needed to correct such errors and conserving computing resources associated with correcting erroneous input from the user and improving accessibility for users unable (e.g., users otherwise occupied or physically unable) to provide hand inputs or controller inputs.

[0297] In some embodiments, while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to a respective region: in accordance with a determination that the gaze of the user is directed to a second region, different from and adjacent to the respective region, the computer system continues scrolling the scrollable content, such as the region to which the gaze 708 is directed to in Fig. 7C. In some embodiments, continuing scrolling the scrollable content in accordance with a determination that the gaze of the user is directed to a second region, different from and adjacent to the respective region is analogous to and / or includes one or more characteristics of continuing scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to a second region, different from and adjacent to the first region as described above.[02...

Claims

1. CLAIMSWhat is claimed is:

1. A method comprising: at a computer system in communication with a display generation component and one or more input devices: while displaying, via the display generation component, scrollable content including a first region of the scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that the gaze is directed to a first type of content in the first region, scrolling the scrollable content at a first speed; and in accordance with a determination that the gaze is directed to a second type of content in the first region, wherein the second type of content is different from the first type of content, scrolling the scrollable content at a second speed, different from the first speed.

2. The method of claim 1, further comprising: in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that the gaze is directed to a second region of the scrollable content, different from the first region, forgoing scrolling the scrollable content based on the gaze of the user directed to the scrollable content.

3. The method of any of claims 1-2, wherein: the first type of content is text-based content; and the second type of content is image-based content.

4. The method of any of claims 1-3, wherein scrolling the scrollable content at a respective speed includes: while the gaze of the user is directed to a respective location: in accordance with a determination that the respective location includes the first type of content, scrolling the scrollable content at the first speed; andwhile scrolling the scrollable content at the first speed, in accordance with a determination that the content at the respective location changes from including the first type of content to including the second type of content, changing the respective speed from the first speed to the second speed.

5. The method of any of claims 1-4, wherein scrolling the scrollable content at a respective speed includes: in accordance with a determination that a location of the gaze of the user directed to the first region is a first distance from an edge of the first region, scrolling the scrollable content at a third speed; and in accordance with a determination that the location of the gaze of the user directed to the first region is a second distance from an edge of the first region, different from the first distance, scrolling the scrollable content at a fourth speed, different from the third speed.

6. The method of any of claims 1-5, wherein scrolling the scrollable content at a respective speed includes: in accordance with a determination that the gaze of the user is directed to the first region for a first period of time, scrolling the scrollable content at a third speed; and in accordance with a determination that the gaze of the user is directed to the first region for a second period of time, scrolling the scrollable content at a fourth speed, different from the third speed.

7. The method of any of claims 1-6, further comprising: while displaying the scrollable content including the first region, and while the gaze of the user is directed away from the first region of the scrollable content, detecting the gaze of the user directed to the first region of the scrollable content; and in response to detecting that the gaze of the user is directed to the first region of the scrollable content: in accordance with a determination that the gaze of the user is directed to the first region of the scrollable content for less than a first duration threshold, forgoing scrolling the scrollable content; and in accordance with a determination that the gaze of the user is directed to the first region of the scrollable content for longer than the first duration threshold, scrolling the scrollable content.

8. The method of any of claims 1-7, further comprising: while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region, in accordance with a determination that the gaze of the user is directed to a second region, different from and adjacent to the first region, continuing scrolling the scrollable content; and in accordance with a determination that the gaze of the user is directed to a third region, different from the first region and the second region, ceasing scrolling the scrollable content.

9. The method of any of claims 1-8, further comprising: while displaying the scrollable content, and while the gaze of user is directed to the first region, detecting the gaze of the user moving from the first region to a second region, different from and adjacent to the first region; and in response to detecting the gaze of the user moving from the first region to the second region: in accordance with a determination that the scrollable content was scrolling prior to detecting the gaze of the user moving from the first region to the second region, continuing scrolling the scrollable content; and in accordance with a determination that the scrollable content was not scrolling prior to detecting the gaze of the user moving from the first region to the second region, forgoing scrolling the scrollable content.

10. The method of any of claims 1-9, further comprising: while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to a respective region: in accordance with a determination that the gaze of the user is directed to a second region, different from and adjacent to the respective region, continuing scrolling the scrollable content; and in accordance with a determination that the gaze of the gaze of the user is directed to a third region, different from the respective region and the second region, and adjacent to the respective region, continuing scrolling the scrollable content, wherein a size of the second region is different from a size of the third region.

11. The method of claim 10, further comprising:while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the respective region: in accordance with a determination that the gaze of the user is directed to a fourth region, different from the respective region, the second region, the third region and adjacent to the respective region of the scrollable content, continuing scrolling the scrollable content; and in accordance with a determination that the gaze of the user is directed to a fifth region, different from the respective region, the second region, the third region, and the fourth region and adjacent to the respective region of the scrollable content, continuing scrolling the scrollable content, wherein a size of the fourth region is the same as a size of the fifth region.

12. The method of any of claims 1-11, wherein scrolling the scrollable content at a respective speed includes: in accordance with a user-defined speed setting being a first user-selected speed setting, changing the respective speed by a first modifier value; and in accordance with the user-defined speed setting being a second user-selected speed setting, different from the first user-selected speed setting, changing the respective speed by a second modifier value, different from the first modifier value.

13. The method of any of claims 1-12, further comprising: while scrolling the scrollable content at a respective speed, detecting that a scroll limit of the scrollable content has been reached; and in response to detecting that the scroll limit of the scrollable content has been reached: in accordance with a determination that a speed associated with scrolling the scrollable content prior to detecting that the scrolling limit has been reached is a first speed, scrolling the scrollable content beyond the scrolling limit by a first amount of scrolling; and displaying, via the display generation component, an animation of the scrollable content moving back from the first amount beyond the scrolling limit toward a location that is within the scrolling limit; and in accordance with a determination that the speed associated with scrolling the scrollable content prior to detecting that the scrolling limit has been reached is a second speed that is different from the first speed: scrolling the scrollable content beyond the scrolling limit by a second amount of scrolling that is different from the first amount of scrolling; anddisplaying, via the display generation component, an animation of the scrollable content moving back from the second amount beyond the scrolling limit toward a location that is within the scrolling limit.

14. The method of any of claims 1-13, further comprising: while scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region, detecting that the gaze of the user has moved to being directed to a boundary portion of a user interface element in which the scrollable content is displayed; and in response to detecting that the gaze of the user is directed to the boundary portion, ceasing scrolling the scrollable content.

15. The method of claim 14, wherein a size of the boundary portion of the user interface element in which the scrollable content is displayed changes over time.

16. The method of any of claims 14-15, wherein: in accordance with a determination that the first region of the scrollable content includes the first type of content, the size and / or a position of the boundary portion is a first size and / or first position; and in accordance with a determination that the first region of the scrollable content includes the second type of content, the size of the boundary portion is a second size and / or second position, different from the first size and / or second position.

17. The method of any of claims 14-16, wherein one or more parameters of the boundary portion of the user interface element in which the scrollable content is displayed are selected by an application associated with the scrollable content.

18. The method of any of claims 1-17, wherein the first region of the scrollable content has a first visual appearance while the gaze is not directed to the first region, the method further comprising: while the gaze of the user is not directed to the first region of the scrollable content, displaying the first region of the scrollable content with the first visual appearance;while displaying the scrollable content including the first region detecting, via the one or more input devices, the gaze of the user change from being directed to a location that is away from the first region to being directed to the first region; and in response to detecting the gaze of the user change from being directed to a location that is away from the first region to being directed to the first region, displaying the first region with a second visual appearance, different from the first visual appearance.

19. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: while displaying, via the display generation component, scrollable content including a first region of the scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that the gaze is directed to a first type of content in the first region, scrolling the scrollable content at a first speed; and in accordance with a determination that the gaze is directed to a second type of content in the first region, wherein the second type of content is different from the first type of content, scrolling the scrollable content at a second speed, different from the first speed.

20. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform a method comprising: while displaying, via the display generation component, scrollable content including a first region of the scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and in response to detecting the gaze of the user directed to the scrollable content:in accordance with a determination that the gaze is directed to a first type of content in the first region, scrolling the scrollable content at a first speed; and in accordance with a determination that the gaze is directed to a second type of content in the first region, wherein the second type of content is different from the first type of content, scrolling the scrollable content at a second speed, different from the first speed.

21. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; means for while displaying, via the display generation component, scrollable content including a first region of the scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and means for in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that the gaze is directed to a first type of content in the first region, scrolling the scrollable content at a first speed; and in accordance with a determination that the gaze is directed to a second type of content in the first region, wherein the second type of content is different from the first type of content, scrolling the scrollable content at a second speed, different from the first speed.

22. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 1-18.

23. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform any of the methods of claims 1-18.

24. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and means for performing any of the methods of claims 1-18.

25. A method comprising: at a computer system in communication with a display generation component and one or more input devices: while displaying, via the display generation component, scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that gaze-based criteria for scrolling the scrollable content is met while a respective input element is not providing an input to scroll the scrollable content, scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content; and in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is met while the respective input element is providing an input to scroll the scrollable content, forgoing scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content.

26. The method of claim 25, wherein the gaze-based criteria include a criterion that is met when one or more of location-based criteria or duration-based criteria are met.

27. The method of any of claims 25-26, wherein the gaze-based criteria for scrolling the scrollable content includes a criterion that is met while the gaze of the user is directed to a first region of the scrollable content, the method further comprising: in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is not met because the gaze of the user is determined to not be directed to the first region of the scrollable content, forgoing scrolling the scrollable content.

28. The method of any of claims 25-27, wherein detecting the input to scroll the scrollable content provided by the respective input element includes detecting, via the one or more input devices, movement of a portion of the user of the computer system.

29. The method of any of claims 25-28, wherein the scrollable content includes a first region, the method further comprising: in response to detecting the gaze of the user directed to the first region of the scrollable content: in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is met while the respective input element is providing an input to respective content, scrolling the scrollable content in accordance with the gaze of the user directed to the first region.

30. The method of claim 29, wherein: the scrollable content is part of a first user interface element; and the input to the respective content provided by the respective input element is an input to scroll the respective content, wherein the respective content is also part of the first user interface element.

31. The method of any of claims 29-30, wherein: the scrollable content is part of a first user interface element; and the input to the respective content provided by the respective input element is an input to scroll the respective content, wherein the respective content is part of a second user interface element, different form the first user interface element.

32. The method of any of claims 29-31, further comprising: while displaying the scrollable content, and while displaying virtual content, different from the scrollable content, detecting the gaze of the user directed to the first region of the scrollable content; and in response to detecting the gaze of the user directed to the first region of the scrollable content: in accordance with a determination that gaze-based criteria for scrolling the scrollable content is met, and while the respective input element is providing an input to move the virtual content from a first location to a second location, different from the first location,scrolling the scrollable content in accordance with the gaze of the user directed to the first region.

33. The method of any of claims 29-32, further comprising: while displaying the scrollable content, and while displaying virtual content, different from the scrollable content, detecting, via the one or more input devices, the gaze of the user directed to the first region of the scrollable content; and in response to detecting the gaze of the user directed to the first region of the scrollable content: in accordance with a determination that gaze-based criteria for scrolling the scrollable content is met while the respective input element is providing an input to change a size of the virtual content, scrolling the scrollable content in accordance with the gaze of the user directed to the first region while changing the size of the virtual content in accordance with the input from the respective input element.

34. The method of any of claims 25-33, further comprising: in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is met while the respective input element is not engaged, scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content.

35. The method of any of claims 25-34, wherein scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content includes: in accordance with a determination that a location of the gaze of the user directed to the scrollable content is a first location of the scrollable content, scrolling the scrollable content with a first speed; and in accordance with a determination that the location of the gaze of the user directed to the scrollable content is a second location of the scrollable content, different from the first location, scrolling the scrollable content with a second speed, different from the first speed.

36. The method of any of claims 25-35, further comprising: displaying, via the display generation component, a control element associated with the scrollable content outside an area of the scrollable content with a first visual appearance;while displaying the control element, detecting, via the one or more input devices, the gaze of the user of the computer system directed to the control element; and in response to detecting the gaze of the user directed to the control element: in accordance with a determination that the gaze-based criteria for scrolling the scrollable content was met within a first time threshold before detecting the gaze of the user of the computer system directed to the control element, displaying, via the display generation component, the control element with a second visual appearance, different from the first visual appearance, within a second time threshold; and in accordance with a determination that the gaze-based criteria for scrolling the scrollable content was not met within the first time threshold before detecting the gaze of the user of the computer system directed to the control element, forgoing displaying the control element with the second visual appearance for a third time threshold.

37. The method of claim 36, further comprising: in response to detecting the gaze of the user directed to the control element: in accordance with a determination that the gaze-based criteria for scrolling the scrollable content was not met within the first time threshold before detecting the gaze of the user of the computer system directed to the control element, displaying, via the display generation component, the control element with the second visual appearance after a fourth time threshold, different from the third time threshold.

38. The method of any of claims 25-37, further comprising: while displaying, via the display generation component, a user interface element and a control element associated with the user interface element: while a gaze of the user of the computer system is directed to the control element and while a system focus is on the control element, detecting, via the one or more input devices, movement of the gaze of the user to the user interface element; and in response to detecting the movement of the gaze of the user to the user interface element: in accordance with a determination that the user interface element has gaze-based scrolling enabled, and in accordance with a determination that the movement of the gaze of the user is greater than a first threshold distance away from the control element, moving the system focus from the control element to the user interface element; andin accordance with a determination that the user interface element does not have gaze-based scrolling enabled, and in accordance with a determination that the movement of the gaze of the user is greater than a second threshold distance, wherein the second threshold distance is greater than the first threshold distance, away from the control element to the user interface element, moving the system focus from the control element to the user interface element.

39. The method of any of claims 25-38, further comprising: while displaying, via the display generation component, a control element associated with the scrollable content outside an area of the scrollable content with a first visual appearance: in accordance with a determination that the gaze of the user is directed to the control element, and prior to changing a visual appearance of the control element from the first visual appearance to a second visual appearance based on the gaze of the user being directed to the control element, detecting, via the one or more input devices, a first input from the respective input element directed to the control element; and in response to detecting the first input, selecting the control element.

40. The method of any of claims 25-39, further comprising: displaying, via the display generation component, a control element associated with the scrollable content outside an area of the scrollable content; while displaying the control element and while a system focus is on the scrollable content, detecting, via the one or more input devices, the gaze of the user of the computer system moving to the control element; in response to detecting the gaze of the user moving to a location of the control element, changing the system focus to the control element; while the system focus is directed to the control element, detecting that the gaze of the user has moved away from the location of the control element; and in response to detecting that the gaze of the user has moved away from the location of the control element: in accordance with a determination that the gaze of the user has moved away from the location of the control element by a first amount and in accordance with a determination that gaze-based scrolling occurred within a first time threshold of when the gaze of the user moved to the location of the control element, removing the system focus from the control element; andin accordance with the determination that the gaze of the user has moved away from the location of the control element by the first amount and in accordance with a determination that gaze-based scrolling did not occur within the first time threshold of when the gaze of the user moved to the location of the control element, forgoing removing the system focus on the control element.

41. The method of claim 40, further comprising: in response to detecting that the gaze of the user has moved away from the location of the control element: in accordance with the determination that the gaze of the user has moved away from the location of the control element by a second amount, greater than the first amount, removing the system focus from the control element.

42. The method of any of claims 40-41, wherein while the system focus is directed to the control element, the control element is configured to receive one or more inputs from a portion of the user of the computer system.

43. The method of claim 42, further comprising: while displaying the control element and while the system focus is on the control element, detecting, via the one or more input devices, the portion of the user providing an input directed to the control element; and in response to detecting the portion of the user providing the input directed to the control element, performing an action associated with the control element in accordance with the input directed to the control element provided by the portion of the user.

44. The method of any of claims 40-43, wherein the control element is a movement affordance that is selectable to move the scrollable content.

45. The method of any of claims 40-44, wherein the control element is a resize affordance that is selectable to resize the scrollable content.

46. The method of any of claims 40-45, wherein the control element is a close affordance that is selectable to close the scrollable content.

47. The method of any of claims 40-46, further comprising: displaying, via the display generation component, a control element associated with the scrollable content, and while the system focus is directed to the control element, detecting, via the one or more input devices, the gaze of the user of the computer system has moved away from the control element; and in response to detecting the gaze of the user has moved away from the control element: in accordance with a determination that the gaze of the user has moved away from the location of the control element by a first amount, removing the system focus from the control element irrespective of whether gaze-based scrolling occurred prior to the system focus moving to the control element.

48. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: while displaying, via the display generation component, scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that gaze-based criteria for scrolling the scrollable content is met while a respective input element is not providing an input to scroll the scrollable content, scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content; and in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is met while the respective input element is providing an input to scroll the scrollable content, forgoing scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content.

49. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processorsof a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform a method comprising: while displaying, via the display generation component, scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that gaze-based criteria for scrolling the scrollable content is met while a respective input element is not providing an input to scroll the scrollable content, scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content; and in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is met while the respective input element is providing an input to scroll the scrollable content, forgoing scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content.

50. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; means for while displaying, via the display generation component, scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the scrollable content; and means for in response to detecting the gaze of the user directed to the scrollable content: in accordance with a determination that gaze-based criteria for scrolling the scrollable content is met while a respective input element is not providing an input to scroll the scrollable content, scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content; and in accordance with a determination that the gaze-based criteria for scrolling the scrollable content is met while the respective input element is providing an input to scroll the scrollable content, forgoing scrolling the scrollable content in accordance with the gaze of the user directed to the scrollable content.

51. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 25-47.

52. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform any of the methods of claims 25-47.

53. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and means for performing any of the methods of claims 25-47.

54. A method comprising: at a computer system in communication with a display generation component and one or more input devices: while displaying, via the display generation component, a plurality of virtual objects, detecting, via the one or more input devices, a gaze of a user directed to a first virtual object of the plurality of virtual objects, wherein the first virtual object is displayed with a first visual appearance of the first virtual object; and in response to detecting the gaze of the user directed to the first virtual object, in accordance with a determination that a duration for which the gaze of the user has been directed to the first virtual object exceeds a first time threshold, changing a visual appearance of the first virtual object from the first visual appearance of the first virtual object to a second visual appearance of the first virtual object, different from the first visual appearance of the first virtual object; and while the first virtual object is displayed with the second visual appearance of the first virtual object, in accordance with a determination that the duration for which the gaze of the userhas been directed to the first virtual object exceeds a second time threshold, longer than the first time threshold, changing the visual appearance of the first virtual object from the second visual appearance of the first virtual object to a third visual appearance of the first virtual object, different from the first visual appearance of the first virtual object and the second visual appearance of the first virtual object, wherein the third visual appearance includes visual content displayed in the first virtual object that is not included in the first virtual object having the first visual appearance of the first virtual object and second visual appearance of the first virtual object.

55. The method of claim 54, the method further comprising: while displaying, via the display generation component, the first virtual object with the second visual appearance, detecting, via the one or more input devices, that the gaze of the user is not directed to the first virtual object; and in response to detecting the gaze of the user is not directed to the first virtual object, changing the visual appearance of the first virtual object from the second visual appearance of the first virtual object to the first visual appearance of the first virtual object.

56. The method of any of claims 54-55, the method further comprising: while the duration for which the gaze of the user has been directed to the first virtual object exceeds the first time threshold but not the second time threshold, and while displaying the first virtual object with the second visual appearance of the first virtual object, detecting, via the one or more input devices, that the gaze of the user is no longer directed to the first virtual object; and in response to detecting that the gaze of the user is no longer directed to the first virtual object, changing the visual appearance of the first virtual object from the second visual appearance of the first virtual object to the first visual appearance of the first virtual object without displaying the first virtual object with the third visual appearance of the first virtual object.

57. The method of any of claims 54-56, wherein the plurality of the virtual objects includes a second virtual object, the method further comprising: detecting, via the one or more input devices, the gaze of a user being directed to the second virtual object, wherein the second virtual object is displayed with a first visual appearance of the second virtual object; andin response to detecting the gaze of the user directed to the second virtual object, in accordance with a determination that a duration for which the gaze of the user has been directed to the second virtual object exceeds the first time threshold, changing a visual appearance of the second virtual object from the first visual appearance of the second virtual object to a second visual appearance of the second virtual object, different from the first visual appearance of the second virtual object; and while the second virtual object is displayed with the second visual appearance of the second virtual object, in accordance with a determination that the duration for which the gaze of the user has been directed to the second virtual object exceeds the second time threshold, longer than the first time threshold, changing the visual appearance of the second virtual object from the second visual appearance of the second virtual object to a third visual appearance of the second virtual object, different from the first visual appearance of the second virtual object and the second visual appearance of the second virtual object, wherein the third visual appearance includes visual content displayed in the second virtual object that is not included in the second virtual object having the first visual appearance of the second virtual object and second visual appearance of the second virtual object.

58. The method of claim 57, the method further comprising: while displaying, via the display generation component, the second virtual object with the second visual appearance, detecting, via the one or more input devices, that the gaze of the user is not directed to the second virtual object; and in response to detecting the gaze of the user is not directed to the second virtual object, changing the visual appearance of the second virtual object from the second visual appearance of the second virtual object to the first visual appearance of the second virtual object.

59. The method of claim 57, the method further comprising: while the duration for which the gaze of the user has been directed to the second virtual object exceeds the first time threshold but not the second time threshold, and while displaying the second virtual object with the second visual appearance of the second virtual object, detecting, via the one or more input devices, that the gaze of the user is no longer directed to the second virtual object; and in response to detecting that the gaze of the user is no longer directed to the second virtual object, changing the visual appearance of the second virtual object from the second visual appearance of the second virtual object to the first visual appearance of the second virtual objectwithout displaying the second virtual object with the third visual appearance of the second virtual object.

60. The method of any of claims 54-59, wherein: displaying the first virtual object with the second visual appearance of the first virtual object includes displaying the first virtual object with a first size; displaying the first virtual object with the first visual appearance of the first virtual object includes displaying the first virtual object with a second size; and the second size is different from the first size.

61. The method of any of claims 54-60, wherein: the first visual appearance of the first virtual object includes displaying the first virtual object at a first depth with respect to a viewpoint of the user; and the second visual appearance includes displaying the first virtual object at a second depth, different from the first depth, with respect to the viewpoint of the user.

62. The method of any of claims 54-61, wherein: changing the visual appearance from the first visual appearance of the first virtual object to the second visual appearance of the first virtual object includes applying a gaze glow to the first virtual object; and the gaze glow indicates a location on the first virtual object to which attention of the user is directed.

63. The method of any of claims 54-62, wherein changing the visual appearance from the first visual appearance of the first virtual object to the second visual appearance of the first virtual object includes changing a brightness of the first virtual object.

64. The method of any of claims 54-63, wherein changing the visual appearance from the first visual appearance of the first virtual object to the second visual appearance of the first virtual object includes displaying one or more affordances overlaid on the first virtual object from a viewpoint of the user.

65. The method of any of claim 54-64, wherein the visual content associated with the third visual appearance of the first virtual object includes text overlaid on the first virtual object.

66. The method of any of claims 54-65, wherein the changing of the visual appearance of the first virtual object from the second visual appearance of the first virtual object to the third visual appearance of the first virtual object includes displaying a first animation in the first virtual object.

67. The method of claim 66, wherein the first animation includes a first animation sequence, and wherein displaying the first animation comprises: while the gaze of the user is directed to the first virtual object, repeating the first animation sequence when an end of the first animation sequence is reached; and in accordance with a determination that the gaze of the user is no longer directed to the first virtual object, ceasing display of the first animation in the first virtual object.

68. The method of any of claims 54-67, further comprising: detecting, via the one or more input devices, a selection input; and in response to detecting the selection input, in accordance with a determination that the gaze of the user is directed to the first virtual object at a time corresponding to a time when the selection input was detected, performing a first operation associated with the first virtual object.

69. The method of claim 68, further comprising: in response to detecting a first selection input, in accordance with a determination that the gaze of the user is directed to a second virtual object of the plurality of virtual objects at a time corresponding to a time when the selection input was detected, different from the first virtual object, performing a second operation associated with the second virtual object.

70. The method of any of claims 54-69, wherein: changing the visual appearance of the first virtual object from the first visual appearance of the first virtual object to the second visual appearance of the first virtual object includes displaying a first transition sequence from the first visual appearance of the first virtual object to the second visual appearance of the first virtual object; and the first transition sequence is displayed according to a non-linear transition curve relative to a duration of the gaze.

71. The method of claim 70, wherein changing the visual appearance of the first virtual object from the first visual appearance of the first virtual object to the second visual object comprises: in accordance with a determination that a size of the first virtual object is a first size, displaying the first transition sequence according to a first rate of transition over time; and in accordance with a determination that the size of the first virtual object is a second size, different from the first size, displaying the first transition sequence according to a second rate of transition over time, different from the first rate of transition over time.

72. The method of any of claims 54-71, wherein: the changing of the visual appearance of the first virtual object from the second visual appearance of the first virtual objects to the third visual appearance of the first virtual objects includes displaying a first transition sequence from the second visual appearance of the first virtual object to the third visual appearance of the first virtual object; and the first transition sequence is displayed according to a non-linear transition of animation progress relative to a duration of gaze.

73. The method of claim 72, wherein changing the visual appearance of the first virtual object from the first visual appearance of the first virtual object to the second visual object comprises: in accordance with a determination that a size of the first virtual object is a first size, displaying the first transition sequence according to a first rate of transition over time; and in accordance with a determination that the size of the first virtual object is a second size, different from the first size, displaying the first transition sequence according to a second rate of transition over time, different from the first rate of transition over time.

74. The method of any of claims 54-73, wherein the first virtual object is displayed in a scrollable user interface region, the method further comprising: in response to detecting the gaze of the user directed to the first virtual object, in accordance with a determination that the first virtual object is partially displayed while being displayed in the scrollable user interface region, scrolling the user interface region, wherein the user interface region is scrolled prior to changing the visual appearance of the first virtual object from the first visual appearance of the first visual object to the second visual appearance of the first visual object.

75. The method of any of claims 54-74, wherein the first visual appearance of the first virtual object, the second visual appearance of the first virtual object, and / or the third visual appearance of the first virtual object are customizable.

76. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: while displaying, via the display generation component, a plurality of virtual objects, detecting, via the one or more input devices, a gaze of a user directed to a first virtual object of the plurality of virtual objects, wherein the first virtual object is displayed with a first visual appearance of the first virtual object; and in response to detecting the gaze of the user directed to the first virtual object, in accordance with a determination that a duration for which the gaze of the user has been directed to the first virtual object exceeds a first time threshold, changing a visual appearance of the first virtual object from the first visual appearance of the first virtual object to a second visual appearance of the first virtual object, different from the first visual appearance of the first virtual object; and while the first virtual object is displayed with the second visual appearance of the first virtual object, in accordance with a determination that the duration for which the gaze of the user has been directed to the first virtual object exceeds a second time threshold, longer than the first time threshold, changing the visual appearance of the first virtual object from the second visual appearance of the first virtual object to a third visual appearance of the first virtual object, different from the first visual appearance of the first virtual object and the second visual appearance of the first virtual object, wherein the third visual appearance includes visual content displayed in the first virtual object that is not included in the first virtual object having the first visual appearance of the first virtual object and second visual appearance of the first virtual object.

77. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform a method comprising: while displaying, via the display generation component, a plurality of virtual objects, detecting, via the one or more input devices, a gaze of a user directed to a first virtual object of the plurality of virtual objects, wherein the first virtual object is displayed with a first visual appearance of the first virtual object; and in response to detecting the gaze of the user directed to the first virtual object, in accordance with a determination that a duration for which the gaze of the user has been directed to the first virtual object exceeds a first time threshold, changing a visual appearance of the first virtual object from the first visual appearance of the first virtual object to a second visual appearance of the first virtual object, different from the first visual appearance of the first virtual object; and while the first virtual object is displayed with the second visual appearance of the first virtual object, in accordance with a determination that the duration for which the gaze of the user has been directed to the first virtual object exceeds a second time threshold, longer than the first time threshold, changing the visual appearance of the first virtual object from the second visual appearance of the first virtual object to a third visual appearance of the first virtual object, different from the first visual appearance of the first virtual object and the second visual appearance of the first virtual object, wherein the third visual appearance includes visual content displayed in the first virtual object that is not included in the first virtual object having the first visual appearance of the first virtual object and second visual appearance of the first virtual object.

78. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; means for while displaying, via the display generation component, a plurality of virtual objects, detecting, via the one or more input devices, a gaze of a user directed to a first virtual object of the plurality of virtual objects, wherein the first virtual object is displayed with a first visual appearance of the first virtual object; andmeans for in response to detecting the gaze of the user directed to the first virtual object, in accordance with a determination that a duration for which the gaze of the user has been directed to the first virtual object exceeds a first time threshold, changing a visual appearance of the first virtual object from the first visual appearance of the first virtual object to a second visual appearance of the first virtual object, different from the first visual appearance of the first virtual object; and means for while the first virtual object is displayed with the second visual appearance of the first virtual object, in accordance with a determination that the duration for which the gaze of the user has been directed to the first virtual object exceeds a second time threshold, longer than the first time threshold, changing the visual appearance of the first virtual object from the second visual appearance of the first virtual object to a third visual appearance of the first virtual object, different from the first visual appearance of the first virtual object and the second visual appearance of the first virtual object, wherein the third visual appearance includes visual content displayed in the first virtual object that is not included in the first virtual object having the first visual appearance of the first virtual object and second visual appearance of the first virtual object.

79. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 54-75.

80. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform any of the methods of claims 54-75.

81. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; andmeans for performing any of the methods of claims 54-75.

82. A method comprising: at a computer system in communication with one or more input devices and one or more display generation components: while displaying, via the one or more display generation components, a respective virtual object, detecting, via the one or more input devices, attention of a user of the computer system directed to the respective virtual object; and in response to detecting the attention of the user directed to the respective virtual object: in accordance with a determination that the respective virtual object is a first virtual object, displaying, via the one or more display generation components, a first animation that follows a respective animation curve, wherein: an appearance of the respective virtual object during the first animation is based on an interpolation between two or more appearance states for the first virtual object; and the first animation progresses along the respective animation curve based on a duration of the attention being directed toward the first virtual object; and in accordance with a determination that the respective virtual object is a second virtual object, different from the first virtual object, displaying, via the one or more display generation components, a second animation that follows the respective animation curve, wherein: the appearance of the respective virtual object during the second animation is based on an interpolation between two or more appearance states for the second virtual object; and the second animation progresses along the respective animation curve based on a duration of the attention being directed toward the second virtual object.

83. The method of claim 82, wherein the respective animation curve includes a first portion that progresses in accordance with a first average rate over time and includes a second portion that progresses in accordance with a second average rate over time, different than the first average rate over time.

84. The method of claim 83, wherein the second average rate is greater than the first average rate.

85. The method of any of claims 83-84, wherein the first portion of the respective animation curve is non-linear or the second portion of the respective animation curve is non-linear.

86. The method of any of claims 83-85, wherein: the first portion of the respective animation curve includes a first peak value, the second portion of the respective animation curve includes a second peak value, and a value of the respective animation curve when the respective virtual object is displayed with a final appearance state is a third value, less than the first peak value or less than the second peak value.

87. The method of any of claims 83-86, wherein: the respective animation curve includes a transition portion for transitioning from the first portion to the second portion of the animation curve, and at least a portion of a derivative of the transition portion of the respective animation curve is non-continuous.

88. The method of claim 87, wherein: the first virtual object is associated with a first intermediate appearance state that is displayed when the computer system is displaying the first animation during the transition portion of the respective animation curve, and the second virtual object is associated with a second intermediate appearance state that is displayed when the computer system is displaying the second animation during the transition portion of the respective animation curve.

89. The method of any of claims 83-88, wherein a rate of change of the respective animation curve gradually increases during the first portion over time, and a rate of change of the respective animation curve gradually decreases during the second portion over time.

90. The method of any of claims 83-89, wherein displaying the first animation includes: while the first animation progresses along the first portion of the respective animation curve, displaying text associated with the first virtual object.

91. The method of claim 90, wherein displaying the text during display of the first animation further comprises:while the first animation progresses along the first portion of the respective animation curve, displaying, via the one or more display generation components, a first portion of the text, and while the first animation progresses along the second portion of the respective animation curve, displaying, via the one or more display generation components, the first portion of the text and a second portion of the text, different from the first portion of the text.

92. The method of any of claims 90-91, wherein the text associated with the respective virtual object was not displayed prior to displaying the first animation.

93. The method of any of claims 83-92, wherein a duration of time during which the computer system displays the first animation in accordance with the first portion of the respective animation curve is greater than a duration of time during which the computer system displays the first animation in accordance with the second portion of the respective animation curve.

94. The method of any of claims 83-93, wherein: displaying the first animation in accordance with the first portion of the respective animation curve includes displaying, via the one or more display generation components, a first amount of information, and displaying the first animation in accordance with the second portion of the respective animation curve includes displaying, via the one or more display generation components, a second amount of information, greater than the first amount of information.

95. The method of any of claims 83-94, wherein displaying the first animation includes: during the first portion of the respective animation curve, changing a size of the respective virtual object along a first dimension relative to a three-dimensional environment of the user and not along a second dimension relative to the three-dimensional environment, and during the second portion of the respective animation curve, changing the size of the respective virtual object along a plurality of dimensions, including the first dimension and the second dimension relative to the three-dimensional environment.

96. The method of any of claims 82-95 wherein:the two or more appearance states for the first virtual object include respective start and end appearance states defined by a first process; and the two or more appearance states for the second virtual object include respective start and end appearance states defined by a second process, different from the first process.

97. The method of any of claims 82-95, wherein the first virtual object is associated with a first application and the second virtual object is associated with a second application, different from the first application.

98. The method of any of claims 82-97, further comprising: while displaying the first animation, detecting the attention of the user move away from the respective virtual object; and in response to detecting the attention of the user move away from the respective virtual object, ceasing display of the first animation.

99. The method of any of claims 82-98, wherein displaying the first animation includes changing one or more of a scale relative to a three-dimensional environment, an opacity, or a shape of the respective virtual object.

100. The method of any of claims 82-99, further comprising: while displaying the respective virtual object, detecting, via the one or more input devices, input directed toward the respective virtual object; and in response to detecting the input: displaying, via the one or more display generation components, the first animation that follows the respective animation curve, wherein in accordance with a determination that the input corresponds to a direct input type, the respective animation curve corresponds to a first animation curve, and in accordance with a determination that the input corresponds to an indirect input type, the respective animation curve corresponds to a second animation curve, different from the first animation curve.

101. The method of claim 100, wherein the first animation curve corresponds to a first duration of time, and wherein the second animation curve corresponds to a second duration of time that is longer than the first duration of time.

102. The method of any of claims 100-101, wherein: in response to detecting the input: in accordance with a determination that the input includes direct input directed to a hardware input device, the respective animation curve is the first animation curve; and in accordance with a determination that the input includes direct input that includes an air gesture, the respective curve is the first animation curve.

103. The method of any of claims 82-102, wherein: the respective animation curve spans a respective amount of time; and the respective amount of time is determined by a process associated with the respective virtual object.

104. The method of any of claims 82-103, wherein: displaying the first virtual object includes displaying a representation of a search field; displaying the first animation includes increasing a size of the representation of the search field relative to a three-dimensional environment and displaying one or more search suggestions that are selectable to initiate corresponding searches.

105. The method of any of claims 82-104, wherein: displaying the first virtual object includes displaying, via the one or more display generation components, a representation of a respective user of a computer system, different from the computer system; and displaying the first animation includes displaying, via the one or more display generation components, a current status of the respective user of the respective computer system.

106. The method of any of claims 82-105, wherein: displaying the first virtual object includes displaying, via the one or more display generation components, respective text prior to detecting the attention of the user directed to the first virtual object; and displaying the first animation includes displaying, via the one or more display generation components, the respective text.

107. The method of claim 106, wherein:the respective text displayed while displaying the first animation is a portion of text; and the portion of the text is not displayed prior to detecting the attention of the user directed to the first virtual object.

108. The method of any of claims 106-107, wherein: the respective text displayed while displaying the first animation corresponds to a message received at the computer system; and the message received at the computer system is not displayed prior to detecting the attention of the user directed to the first virtual object.

109. The method of any of claims 82-108, wherein before the attention of the user is directed to the respective virtual object, the respective virtual object is displayed with a first appearance, the method further comprising: while displaying the respective virtual object with a second appearance, wherein the second appearance corresponds to an appearance of the respective virtual object after displaying the first animation, detecting, via the one or more input devices, the attention of the user move away from the respective virtual object; and in response to detecting the attention of the user move away from the respective virtual object, updating display of the respective virtual object from the second appearance to the first appearance.

110. The method of claim 109, wherein updating display of the respective virtual object from the second appearance to the first appearance is initiated in accordance with a determination that the attention of the user has moved away from the respective virtual object for a period of time longer than a time threshold.

111. The method of any of claims 82-110, the method further comprising: in accordance with a determination that the first animation has concluded in accordance with the respective animation curve, displaying, via the one or more display generation components, the respective virtual object with an end appearance state while one or more criteria are satisfied, wherein the one or more criteria include a criterion that is satisfied while the attention of the user remains directed to the respective virtual object.

112. The method of claim 111, further comprising:while displaying the respective virtual object with the end appearance state, detecting, via the one or more input devices, attention of the user move away from the respective virtual object; and in response to detecting the attention of the user move away from the respective virtual object, initially maintaining display of the respective virtual object with the end appearance state.

113. The method of claim 112, wherein: the respective virtual object is displayed with an initial appearance state before detecting attention of the user being directed to the respective virtual object; and the method further comprises, after initially maintaining the display of the respective virtual object with the end appearance state, in accordance with a determination that the attention of the user has been directed away from the respective virtual object for a period of time greater than a threshold period of time, displaying, via the one or more display generation components, the respective virtual object with the initial appearance state.

114. The method of any of claims 82-113, wherein: the respective animation curve defines a value of a first characteristic of the respective virtual object over time while attention is directed to the respective virtual object; the first animation further follows an additional animation curve, different from the respective animation curve; and the additional animation curve defines a value of a second characteristic of the respective virtual object, different from the first characteristic, over time while attention is directed to the respective virtual object.

115. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: while displaying, via the one or more display generation components, a respective virtual object, detecting, via the one or more input devices, attention of a user of the computer system directed to the respective virtual object; andin response to detecting the attention of the user directed to the respective virtual object: in accordance with a determination that the respective virtual object is a first virtual object, displaying, via the one or more display generation components, a first animation that follows a respective animation curve, wherein: an appearance of the respective virtual object during the first animation is based on an interpolation between two or more appearance states for the first virtual object; and the first animation progresses along the respective animation curve based on a duration of the attention being directed toward the first virtual object; and in accordance with a determination that the respective virtual object is a second virtual object, different from the first virtual object, displaying, via the one or more display generation components, a second animation that follows the respective animation curve, wherein: the appearance of the respective virtual object during the second animation is based on an interpolation between two or more appearance states for the second virtual object; and the second animation progresses along the respective animation curve based on a duration of the attention being directed toward the second virtual object.

116. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with one or more display generation components and one or more input devices, cause the computer system to perform a method comprising: at computer system in communication with one or more input devices, one or more audio output devices, and one or more display generation components: while displaying, via the one or more display generation components, a respective virtual object, detecting, via the one or more input devices, attention of a user of the computer system directed to the respective virtual object; and in response to detecting the attention of the user directed to the respective virtual object: in accordance with a determination that the respective virtual object is a first virtual object, displaying, via the one or more display generation components, a first animation that follows a respective animation curve, wherein:an appearance of the respective virtual object during the first animation is based on an interpolation between two or more appearance states for the first virtual object; and the first animation progresses along the respective animation curve based on a duration of the attention being directed toward the first virtual object; and in accordance with a determination that the respective virtual object is a second virtual object, different from the first virtual object, displaying, via the one or more display generation components, a second animation that follows the respective animation curve, wherein: the appearance of the respective virtual object during the second animation is based on an interpolation between two or more appearance states for the second virtual object; and the second animation progresses along the respective animation curve based on a duration of the attention being directed toward the second virtual object.

117. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; means for while displaying, via the one or more display generation components, a respective virtual object, detecting, via the one or more input devices, attention of a user of the computer system directed to the respective virtual object; and means for in response to detecting the attention of the user directed to the respective virtual object: in accordance with a determination that the respective virtual object is a first virtual object, displaying, via the one or more display generation components, a first animation that follows a respective animation curve, wherein: an appearance of the respective virtual object during the first animation is based on an interpolation between two or more appearance states for the first virtual object; and the first animation progresses along the respective animation curve based on a duration of the attention being directed toward the first virtual object; and in accordance with a determination that the respective virtual object is a second virtual object, different from the first virtual object, displaying, via the one or more displaygeneration components, a second animation that follows the respective animation curve, wherein: the appearance of the respective virtual object during the second animation is based on an interpolation between two or more appearance states for the second virtual object; and the second animation progresses along the respective animation curve based on a duration of the attention being directed toward the second virtual object.

118. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 82-114.

119. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with a display generation component and one or more input devices, cause the computer system to perform any of the methods of claims 82-114.

120. A computer system that is in communication with a display generation component and one or more input devices, the computer system comprising: one or more processors; memory; and means for performing any of the methods of claims 82-114.

121. A method compri sing : at a computer system in communication with one or more input devices, one or more audio output devices, and one or more display generation components: while concurrently displaying, via the one or more display generation components, a first content item that is playing and a second content item, different from the first content item, that is playing, and while presenting a first audio associated with the first contentitem via the one or more audio output devices, detecting attention of a user of the computer system move to the second content item; and in response to detecting the attention of the user of the computer system move to the second content item, gradually reducing, over time, a value of an audio parameter of the first audio being output via the one or more audio output devices.

122. The method of claim 121, wherein the method further comprises: in response to detecting the attention of the user of the computer system move to the second content item, gradually increasing, over time, a value of an audio parameter of a second audio being output via the one or more audio output devices, wherein the second audio is associated with the second content item different from the first audio.

123. The method of claim 122, wherein the method further comprises: while concurrently displaying, via the one or more display generation components, the first content item, the second content item, and a third content item, and while the attention of the user is directed to the first content item: in accordance with detecting the attention of the user of the computer system move from the first content item to the second content item, maintaining a value of an audio parameter of the third content item while increasing the value of the audio parameter of the second content item; and in accordance with detecting the attention of the user of the computer system move from the first content item to the third content item, maintaining the value of the audio parameter of the second content item while increasing a value of an audio parameter of the third content item.

124. The method of any of claims 122-123, further comprising: in response to detecting the attention of the user of the computer system move to the second content item: while gradually reducing, over time, the value of the audio parameter of the first audio being output via the one or more audio output devices, at least partially presenting audio of the second content item.

125. The method of any of claims 122-124, wherein gradually increasing the value of the audio parameter of the second audio over time includes increasing, in a non-linear manner, thevalue of the audio parameter of the second audio being output via the one or more audio output devices.

126. The method of any of claims 122-125, wherein gradually increasing the audio parameter of the second audio includes gradually increasing the audio parameter of the second audio in accordance with a determination that the attention of the user of the computer system has been directed to the second content item for longer than a pre-determined time threshold.

127. The method of any of claims 121-126, wherein: the first content item is associated with a respective application; and the second content item is also associated with the respective application.

128. The method of any of claims 121-127, wherein: the first content item is associated with a first application; and the second content item is associated with a second application, different from the first application.

129. The method of any of claims 121-128, wherein: the first content item is a video content item; and the second content item is also a video content item.

130. The method of claim 129, wherein: displaying the first content item includes playing video content of the first content item, and; the method further comprises, in response to detecting the attention of the user of the computer system move to the second content item from the first content item, ceasing playing of the video content of the first content item.

131. The method of claim 130, wherein: gradually reducing the value of the audio parameter of the first audio over time includes ceasing presentation of the first audio, via the one or more audio output devices, and the ceasing playing of the video content occurs prior to the ceasing presentation of the first audio.

132. The method of any of claims 130-131, further comprising: in response to detecting the attention of the user of the computer system move to the second content item, initiating playing, via the one or more display generation components, of video content of the second content item.

133. The method of claim 132, further comprising: in response to detecting the attention of the user of the computer system move to the second content item, gradually increasing, over time, a value of an audio parameter of a second audio being output via the one or more audio output devices, wherein: the second audio is associated with the second content item, different from the first audio; and gradually increasing the value of the audio parameter begins prior to initiating playing of the video content of the second content item.

134. The method of claim 133, wherein initiating display of the video content of the second content item begins prior to the audio parameter of the second audio reaching a target value.

135. The method of claims 121-134, wherein the first content item and the second content item correspond to an immersive experience.

136. The method of any one of claims 121-135, the method further comprising: in response to detecting the attention of the user of the computer system move to the second content item, increasing, via the one or more display generation components, a visual prominence of the second content item relative to the first content item.

137. The method of any of claims 121-136, wherein gradually reducing the value of the audio parameter of the first audio over time occurs in response to detecting the attention of the user move to the second content, and a determination that the attention of the user is directed to the second content item for longer than a threshold amount of time.

138. The method of any of claims 121-137, wherein the first content item and the second item play concurrently while the gradual reduction, over time, of the value of the audio parameter of the first audio occurs.

139. The method of any of claims 121-138, further comprising: while concurrently displaying the first content item, the second content item, and a user interface element: in accordance with a determination that the user interface has been displayed for longer than a threshold amount of time and that the attention of the user is directed to the user interface element, maintaining display of the user interface element; and in accordance with a determination that the user interface has been displayed for longer than a threshold amount of time and that the attention of the user is not directed to the user interface element, ceasing display of the user interface element.

140. The method of claim 139, wherein the user interface element includes a control interface overlaid on the second content item.

141. The method of claim 139, wherein the user interface element includes a notification user interface.

142. The method of any one of claims 121-141, further comprising: while displaying the second content item that is playing, and while presenting a second audio associated with the second content item, detecting, via the one or more input devices, the attention of the user of the computer system move to a first location within a three-dimensional environment, wherein the first location does not correspond to a content item; and in response to detecting the attention of the user of the computer system move to the first location, forgoing reducing a value of an audio parameter of the second audio over time.

143. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: at computer system in communication with one or more input devices, one or more audio output devices, and one or more display generation components:while concurrently displaying, via the one or more display generation components, a first content item that is playing and a second content item, different from the first content item, that is playing, and while presenting a first audio associated with the first content item via the one or more audio output devices, detecting attention of a user of the computer system move to the second content item; and in response to detecting the attention of the user of the computer system move to the second content item, gradually reducing, over time, a value of an audio parameter of the first audio being output via the one or more audio output devices.

144. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with one or more display generation components and one or more input devices, cause the computer system to perform a method comprising: at computer system in communication with one or more input devices, one or more audio output devices, and one or more display generation components: while concurrently displaying, via the one or more display generation components, a first content item that is playing and a second content item, different from the first content item, that is playing, and while presenting a first audio associated with the first content item via the one or more audio output devices, detecting attention of a user of the computer system move to the second content item; and in response to detecting the attention of the user of the computer system move to the second content item, gradually reducing, over time, a value of an audio parameter of the first audio being output via the one or more audio output devices.

145. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and means for while concurrently displaying, via the one or more display generation components, a first content item that is playing and a second content item, different from the first content item, that is playing, and while presenting a first audio associated with the first content item via the one or more audio output devices, detecting attention of a user of the computer system move to the second content item; andmeans for in response to detecting the attention of the user of the computer system move to the second content item, gradually reducing, over time, a value of an audio parameter of the first audio being output via the one or more audio output devices.

146. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 121-142.

147. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with one or more display generation components and one or more input devices, cause the computer system to perform any of the methods of claims 121-142.

148. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and means for performing any of the methods of claims 121-142.

149. A method, comprising: at a computer system in communication with one or more display generation components and one or more input devices: while displaying, via the one or more display generation components, respective content that includes scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the respective content; and in response to detecting the gaze of the user directed to the respective content: in accordance with a determination that the gaze of the user is directed to a first region of the respective content that is associated with gaze-based scrolling, scrolling thescrollable content, wherein one or more spatial characteristics of the first region are based on one or more characteristics of the respective content; and in accordance with a determination that the gaze of the user is directed to a second region of the respective content that is not associated with gaze-based scrolling, forgoing scrolling the scrollable content.

150. The method of claim 149, wherein: the one or more spatial characteristics of the first region are based on one or more spatial characteristics of one or more exclusion regions for which gaze-based scrolling of the scrollable content is disabled, including: in accordance with a determination that the one or more exclusion regions have a first set of one or more spatial characteristics of the one or more exclusion regions, the first region has a first set of one or more spatial characteristics of the first region; and in accordance with a determination that the one or more exclusion regions have second set of one or more spatial characteristics of the one or more exclusion regions, different from the first set of one or more spatial characteristics of the one or more exclusion regions, the first region has a set of one or more second spatial characteristics of the first region, different from the first set of one or more spatial characteristics of the first region.

151. The method of claim 150, wherein the one or more exclusion regions are determined by the computer system automatically based on evaluation of the respective content, including: in accordance with a determination that the one or more characteristics of the respective content are first content characteristics, identifying a first set of one or more regions of the respective content as the one or more exclusion regions; and in accordance with a determination that the one or more characteristics of the respective content are second content characteristics, different from the first content characteristics, identifying a second set of one or more second regions of the respective content, different from the first set of one or more first regions of the respective content, as the one or more exclusion regions.

152. The method of any of claims 149-151, further comprising: in accordance with a determination that a respective region that includes content of a respective type of content in the respective content is in a baseline region that is associated withgaze-based scrolling, defining the first region of the respective content to include the baseline region and an extended region that is adjacent to the first region; and in accordance with a determination that the respective region is not in the baseline region that is associated with gaze-based scrolling, defining the first region of the respective content to include the baseline region without including the extended region that is adjacent to the first region.

153. The method of claim 152, wherein defining the first region of the scrollable content to include the baseline region and the extended region that is adjacent to the first region includes: in accordance with a determination that the respective region of content is entirely included in the baseline region, defining a size of the extended region to correspond to an amount of overlap between the respective region and the baseline region.

154. The method of any of claims 152-153, wherein defining the first region of the scrollable content to include the baseline region and the extended region that is adjacent to the first region includes: in accordance with a determination that the respective region extends outside of the baseline region, defining a size of the extended region to correspond to a size of the respective region.

155. The method of any of claims 149-154, wherein the first region corresponds to a first edge of the respective content the method further comprising: in accordance with a determination that a respective region that includes content of a respective type of content in the respective content is at the first edge of the respective content, and that a proportion of a dimension of the respective region to a corresponding dimension of the respective content is within a first range of proportions, disabling gaze-based scrolling in the first region of the respective content; and in accordance with a determination that the respective region in the respective content is at the first edge of the respective content, and that the proportion of the dimension of the respective region to the corresponding dimension of the respective content is below the first range of proportions, enabling gaze-based scrolling in the first region of the respective content.

156. The method of claim 155, wherein in accordance with the determination that the respective region is at the first edge of the respective content, and that the proportion of the dimension of the respective region to the corresponding dimension of the respective content is below the first range of proportions, the first region of the respective content includes: a baseline region that corresponds to the first edge of the respective content and is associated with gaze-based scrolling; and an extended region that is adjacent to the first region and is associated with gaze-based scrolling, wherein a size of the extended region corresponds to an amount of overlap between the respective region and the baseline region.

157. The method of any of claims 155-156, further comprising: in accordance with a determination that the respective region is at the first edge of the respective content, and that the proportion of the dimension of the respective region to the corresponding dimension of the respective content is above the first range of proportions, enabling gaze-based scrolling in the first region of the respective content, wherein the first region of the respective content includes: a baseline region that corresponds to the first edge of the respective content and is associated with gaze-based scrolling, without including an extended region based on the respective region.

158. The method of claim 157, wherein the first region includes an area where the baseline region and the respective region overlap.

159. The method of any of claims 149-158, further comprising: in accordance with a determination that a respective region that includes content of a respective type of content in the respective content is in a central region of the respective content, modifying the first region of the respective content in a first manner; and in accordance with a determination that the respective region is not in the central region of the respective content, modifying the first region of the respective content in a second manner, different from the first manner.

160. The method of claim 159, wherein:modifying the first region of the respective content in the first manner includes disabling gaze-based scrolling in the first region; and modifying the first region of the respective content in the second manner includes maintaining gaze-based scrolling in the first region.

161. The method of claim 160, wherein modifying the first region of the respective content in the second manner includes expanding the first region of the respective content.

162. The method of any of claims 149-161, wherein scrolling the scrollable content in accordance with the determination that the gaze of the user is directed to the first region of the respective content that is associated with gaze-based scrolling includes scrolling the scrollable content in a first manner, the method further comprising: in response to detecting the gaze of the user directed to the respective content and in accordance with a determination that the gaze of the user is directed to a second region of the respective content that is associated with gaze-based scrolling, wherein the second region is different from the first region, scrolling the scrollable content in a second manner, different from the first manner.

163. The method of any of claims 149-162, wherein: in accordance with a determination that the scrollable content is scrollable in a first direction but not scrollable in a second direction, different from the first direction, the first region of the respective content is located at a first location relative to the respective content, wherein the first location corresponds to the first direction of scrolling, and in accordance with a determination that the scrollable content is scrollable in the second direction but not scrollable in the first direction, the first region of the respective content is located at a second location relative to the respective content, different from the first location relative to the respective content, wherein the second location corresponds to the second direction of scrolling.

164. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; andone or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: while displaying, via the one or more display generation components, respective content that includes scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the respective content; and in response to detecting the gaze of the user directed to the respective content: in accordance with a determination that the gaze of the user is directed to a first region of the respective content that is associated with gaze-based scrolling, scrolling the scrollable content, wherein one or more spatial characteristics of the first region are based on one or more characteristics of the respective content; and in accordance with a determination that the gaze of the user is directed to a second region of the respective content that is not associated with gaze-based scrolling, forgoing scrolling the scrollable content.

165. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with one or more display generation components and one or more input devices, cause the computer system to perform a method comprising: while displaying, via the one or more display generation components, respective content that includes scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the respective content; and in response to detecting the gaze of the user directed to the respective content: in accordance with a determination that the gaze of the user is directed to a first region of the respective content that is associated with gaze-based scrolling, scrolling the scrollable content, wherein one or more spatial characteristics of the first region are based on one or more characteristics of the respective content; and in accordance with a determination that the gaze of the user is directed to a second region of the respective content that is not associated with gaze-based scrolling, forgoing scrolling the scrollable content.

166. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising:one or more processors; memory; and means for, while displaying, via the one or more display generation components, respective content that includes scrollable content, detecting, via the one or more input devices, a gaze of a user of the computer system directed to the respective content; and means for, in response to detecting the gaze of the user directed to the respective content: in accordance with a determination that the gaze of the user is directed to a first region of the respective content that is associated with gaze-based scrolling, scrolling the scrollable content, wherein one or more spatial characteristics of the first region are based on one or more characteristics of the respective content; and in accordance with a determination that the gaze of the user is directed to a second region of the respective content that is not associated with gaze-based scrolling, forgoing scrolling the scrollable content.

167. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 149-163.

168. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of a computer system that is in communication with one or more display generation components and one or more input devices, cause the computer system to perform any of the methods of claims 149-163.

169. A computer system that is in communication with one or more display generation components and one or more input devices, the computer system comprising: one or more processors; memory; and means for performing any of the methods of claims 149-163.

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