Touch-Sensitive Display Unlocking via Visual Guidance
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Solution Overview
Problem
Conventional touch-sensitive displays on portable devices often lead to unintentional activation or deactivation of applications due to accidental contact, and the process of unlocking these devices can be inconvenient, requiring users to remember specific patterns or paths on the screen.
Innovation Solution
A method where an unlock image is displayed on a touch-sensitive display, and upon detecting contact, an action image is shown in a separate region, with visual modifications (such as increased brightness or size) guiding the user's movement towards the action image, allowing the device to transition to an unlocked state upon contact with that region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock condition is used to prevent unintentional activation by placing the display in a locked state, then unintentional activation is reduced, but the ease of operation deteriorates because users must remember and access specific patterns or paths to unlock
Solution Approach 1:
The system performs preliminary action by displaying visual guidance (highlighted path or animated guide) that pre-shows the user the exact sequence of taps or path to follow for unlocking. This eliminates the need for the user to remember complex patterns, as the guidance is prepared and displayed in advance, making the unlocking process intuitive while maintaining security.
Solution Approach 2:
The system provides continuous visual feedback during the unlocking process by highlighting the next required tap location or displaying an animated path as the user progresses. This feedback mechanism guides the user through the unlocking sequence in real-time, reducing errors and improving ease of operation while maintaining the locked state's security function.
2Reliability
If the display requires accessing specific regions in a pattern or along a predetermined path to unlock, then security is improved, but the time required to unlock increases and user convenience deteriorates
Solution Approach 1:
The system displays the complete unlocking path or sequence of required taps as a visual guide before the user begins interacting with the lock screen. This preliminary display of the expected sequence allows users to understand the unlocking requirement immediately, reducing trial-and-error attempts and minimizing the time needed to unlock while maintaining security through the structured path requirement.
Solution Approach 2:
The system dynamically adjusts the visual guidance based on the user's progress through the unlocking sequence. As the user taps each required location, the highlighted path or animation updates to show the next required action. This dynamic feedback accelerates the unlocking process by eliminating uncertainty about the required sequence, reducing unlocking time while preserving security through the controlled path.
3Reliability
If the touch-sensitive display uses conventional locking mechanisms requiring pattern or path access, then security is maintained, but the complexity of the user interface increases making it harder to use quickly
Solution Approach 1:
The system simplifies the user interface by providing clear, real-time visual feedback showing exactly where the user needs to tap next and what sequence is required. This feedback mechanism transforms the complex pattern-lock task into a guided, step-by-step process, reducing perceived complexity and making quick unlocking possible while maintaining security through the structured access path.
Solution Approach 2:
The system displays the complete unlocking sequence or highlighted path as a visual guide before interaction begins. This preliminary presentation of the expected sequence simplifies the user interface by eliminating the need to remember complex patterns, making the unlocking process intuitive and quick while preserving security through the controlled access path requirement.
Data Source
AI summary
A method and apparatus for performing an action while a portable computing device is in a locked state is disclosed. An unlock image is displayed in a first region of a touch-sensitive display. Responsive to detecting contact with the touch-sensitive display at the first region, an action image is displayed in a second region of the touch-sensitive display. While the unlock image remains stationary at the first region, movement of the contact with the touch-sensitive display is detected and a direction of movement of the contact is determined. Responsive to determining the direction of movement of the contact is towards the action image, the action image is visually modified to distinguish it from the unlock image. Responsive to the contact with the touch-sensitive display reaching the second region, an action associated with the action image is performed.