Device and method for providing the perception of eye contact

Abstract

A device for providing the perception of eye contact during a video call comprises a body 3 and a two-way mirror 51, wherein the body: encloses an inner volume of space; is removably attachable to a s

Description

FIELD OF THE INVENTION The present invention relates to devices and methods for providing the perception (or illusion) of eye contact during a video call. BACKGROUND OF THE INVENTION Video calling is commonly used for business and social purposes. The use of video calling has become significantly more prevalent due to the 2020 COVID-19 pandemic. A video call allows two or more callers to speak to each other and see each other simultaneously. A video call user requires a screen for displaying a live video feed of the other caller, a speaker (or head / ear phones) for reproducing the speech of the other caller, a camera for capturing a live video feed of the user, a microphone for capturing the speech of the user, and a control system (e.g., a computer) for communicating with the screen, camera, microphone, and speaker as well as the corresponding control system in use by the other caller. This is a typical video call setup. During a video call, the live video feed of the other caller is displayed on the screen. It is usual that, in the live video feed, the head (more particularly, the eyes) of the other caller is positioned centrally. For example, is positioned centrally with respect to the screen or a window displayed across a portion of the screen. Furthermore, it is typical that the user, i.e., who is viewing the live video feed on the screen, will fixate their line of sight towards the eyes of the other caller displayed on the screen - this is because, during in-person social interaction, two persons generally make eye contact during conversation. As such, a fixation point (or focal point) is located around the centre of the screen or window, where the eyes of the other caller are displayed. Therefore, a line of sight can be said to extend between the user’s eyes and the fixation point on the screen. Commonly, the user’s line of sight is perpendicular to the screen. Herein, the terms ‘fixation point’ and Tine of sight’ will be used as described above. However, in a conventional video call setup the camera is located above or to the side of the screen. As such, the camera has an optical axis that may be parallel to but offset from the line of sight or, where the camera is tilted with respect to the screen, may, for example, not be parallel to and which intersects the line of sight. In either case, when the user fixates their line of sight on the fixation point of the screen, this creates the perception, for the other caller viewing a live video feed of the user, that the user is not making eye contact. In the same fashion, because the other caller uses the same conventional video call setup, when the other caller fixates their line of sight on the fixation point of their screen, the user perceives that the other caller is not making eye contact. To avoid doubt, the term ‘optical axis’ will be used herein to refer to an optical axis of a camera. The perception of not making eye contact during a video call provides for a less personable experience by contrast to an in-person meeting. For example, it is hypothesised that the perception of lack of eye contact may cause remote psychotherapy conducted by video call to be less effective than in-person psychotherapy. One proposed solution for providing the perception of eye contact during a video call is disposing a camera directly in front of the focal point of the screen. In this case, the optical axis of the camera and the line of sight are generally coincident. An example of this proposed solution is the ‘MECA 3-In-l Webcam’ described and illustrated at https: / / nietaaxon.tech / [accessed 18th May 2023], However, the camera obstructs a portion of the screen from the user’s view and, particularly for video calling applications, the obstructed portion of the screen is where the other caller’s head is typically displayed. Although this proposed solution may be suitable for some presentation delivery applications, for example, it is not preferred for use in video calls. A second proposed solution is the use of software configured to augment the live video feed of video call participants such that a user always appears to be making eye contact. However, this approach results in an ‘always starting’ phenomenon that appears unnatural to video call participants. The present inventor has found a solution to the aforementioned shortcomings in the state of the art. PROBLEM TO BE SOLVED BY THE INVENTION There is a need for improvements in devices for providing the perception of eye-contact during a video call. There is also a need for improvements to methods of conducting a video call. SUMMARY OF THE INVENTION In accordance with a first aspect of the invention, there is provided a device for providing the perception of eye contact during a video call, the device comprising a body and a two-way mirror, wherein the body: encloses an inner volume of space; is removably attachable to a screen for use during the video call; comprises a first end for disposing in the direction of a user and a second end, opposite to the first end, for disposing in front of the screen; and comprises a camera or a camera receiving means positioned such that the camera or a camera received by the camera receiving means faces the inner volume of space enclosed by the body, and wherein the two-way mirror is: disposed in the inner volume of space and is permanently mounted to the body; and oriented (or positioned) to reflect an image of the user towards the camera or the camera receiving means to provide the perception, when the user is in a pre-defined position with respect to the first end, that a user’s line of sight and an optical axis of the camera or a camera received by the camera receiving means are generally coincident. In a second aspect of the invention, there is provided a device for providing the perception of eye contact during a video call, the device comprising a cuboid-shaped body and a two-way mirror, wherein the body comprises: an upper panel, a lower panel, a first side panel, and a second side panel; and a first open end for disposing in the direction of a user and a second open end, opposite to the first end, for disposing in front of the screen, wherein the body further comprises a camera or a camera receiving means positioned such that an optical axis of the camera or a camera received by the camera receiving means extends into an inner volume of space enclosed by the body and / or is perpendicular to a panel of the body, and wherein the two-way mirror is disposed inside the body at a generally 45° angle with respect to the upper panel, the lower panel, and or the optical axis. In a third aspect of the invention, there is disclosed a method of using a device as defined in the first or the second aspect of invention. In a fourth aspect of the invention, there is disclosed a method of conducting a video call, wherein at least two callers each use a device as defined in the first aspect or the second aspect of invention. ADVANTAGES OF THE INVENTION The device of the invention provides for improved ease of use and improved portability when it is desired to provide the perception of eye-contact during a video call. Furthermore, the method of the invention provides for improvements in remote social interaction. BRIEF DESCRIPTION OF THE DRAWINGS Figure lisa front perspective view of a device in the first expanded form; Figure 2 is a front view of the device of Figure 1 in the second collapsed form; Figure 3 is a side view of the device of Figure 1 attached to a laptop screen; Figure 4 is a side view of the device of Figure 1 in the second collapsed form; and Figure 5 is a schematic diagram of a portion of a device of an embodiment. DETAILED DESCRIPTION OF THE INVENTION In a first aspect of the invention, there is disclosed a device for providing the perception of eye contact during a video call, the device comprising a body and a two-way mirror. The body encloses an inner volume of space (e.g., the body is hollow) and is removably attachable to a screen for use during the video call. The body comprises a first end for disposing in the direction of a user and a second end, opposite to the first end, for disposing in front of the screen. The body further comprises a camera or a camera receiving means positioned such that the camera or a camera received by the camera receiving means faces the inner volume of space enclosed by the body. The two-way mirror is disposed in the inner volume of space and is oriented (or positioned) to reflect an image of the user towards the camera or the camera receiving means to provide the perception, when the user is in a pre-defined position with respect to the first end, that the user’s line of sight and an optical axis of the camera or a camera received by the camera receiving means are generally coincident (or coaxial). The perception that a user’s line of sight and an optical axis of the camera or a camera received by the camera receiving means are generally coincident is provided when the user is in a particular position with respect to the device, as will become apparent below. Preferably, the body has: a depth in the direction of from the first end to the second end, a height in the direction of from a bottom to a top of the body; and a width in the direction of from a first side to a second side of the body. Preferably, the first end of the body may be defined as the front of the body and the second end of the body may be defined as the rear of the body. Although the body can take any shape, the body is preferably cuboid shaped, more preferably rectangular cuboid shaped. Preferably, the body is an enclosure or a shroud. Hereunder, all occurrences of ‘the body’ may be interchanged with ‘the enclosure’ or ‘the shroud’. In preferable embodiments, the body comprises at least one of an upper panel, a lower panel, a first side panel, and a second side panel. More preferably, the body comprises at least an upper panel and a lower panel, or at least a first side panel and a second side panel. Still more preferably, the body comprises an upper panel, a lower panel, a first side panel, and a second side panel. Preferably, the two side panels (i.e., the first side panel and the second side panel) connect the upper panel and the lower panel to each other. More preferably, corresponding first ends of the upper panel and the lower panel are connected by the first panel and corresponding second ends of the upper panel and the lower panel are connected by the second panel. The corresponding first ends and the corresponding second ends are preferably opposite to each other. In a preferred embodiment (and in a second aspect of the invention), there is provided a device for providing the perception of eye contact during a video call, the device comprising a cuboid-shaped body and a two-way mirror. The body comprises an upper panel, a lower panel, a first side panel, and a second side panel. The body further comprises a first open end for disposing in the direction of a user and a second open end, opposite to the first end, for disposing in front of the screen. The body still further comprises a camera or a camera receiving means positioned such that an optical axis of the camera or a camera received by the camera receiving means extends into an inner volume of space enclosed by the body and / or is perpendicular to a panel of the body. The two-way mirror is disposed inside the body at a generally 45° angle with respect to the upper panel, the lower panel, and or the optical axis. Where the context allows, features relating to the device are disclosed herein in respect of both the first and second aspects of the invention. Preferably, a panel (such as the upper panel, the lower panel, the first side panel, and the second side panel) is generally planar. Preferably, a panel is generally rectangular or square shaped. Preferably, the thickness of a panel may be defined as the depth of the panel, a panel has a width in the direction of from the first end to the second end of the body, and / or a panel has a length in the direction perpendicular to from the first end to the second end of the body. Preferably, in use, a user’s line of sight may pass through the first end and the second end of the body. More preferably, in use, a user’s line of sight may pass through the first end and the second end of the body and fixate on a fixation point on the screen. A line of sight is an intangible straight line extending from a user’s eyes to a fixation point. It is noted, as discussed below, that a two-way mirror may be positioned across a user’s line of sight without obstructing the line of sight. Preferably, a user can see through the body from the first end to the second end (and / or vice versa, although a user is positioned in front of the first end when the device is in use). Preferably, when the body is attached to a screen for use during a video call (e.g., when the second end is disposed in front of the screen), a user positioned in front of the first end can see the screen through the body. Preferably, when the body is attached to a screen, a video image displayed on the screen is visible from the first end through the two-way mirror. Preferably, the first end and the second end are open ends. Thus, it is preferred that the body is tube-shaped and / or that the body defines an aperture. Preferably, the body has the shape of an open-ended box. In preferable embodiments, where the body is cuboid-shaped and comprises an upper panel, a lower panel, a first side panel, and a second side panel, the remaining two sides of the cuboid, which are preferably opposite to each other, are open. Preferably, the body comprises an inner surface facing the inner volume of space enclosed by the body and an outer surface opposite to the inner surface. For example, where the body comprises an upper panel, a lower panel, a first side panel, and a second side panel, each panel comprises an inner surface facing the inner volume of space enclosed by the body and an outer surface opposite to the inner surface. Preferably, the inner surface is configured or adapted to minimise or prevent reflection in the inner surface. Preferably, the inner surface is a low- or non-reflective surface, e.g., the inner surface has a matt-finish. Preferably, the colour of the inner surface may be a dark colour. More preferably, the colour of the inner surface is black. Preferably, the body functions to enclose or to shroud a screen or a portion thereof. Preferably, when the body is attached to a screen (e.g., when the second end is disposed in front of the screen), the inner volume of space enclosed by the body is bordered (or further enclosed at the second end) by the screen. Typically, during a video call, a user will position themselves such that their eyes are centred with respect to a fixation point on the screen. By centred, it is meant that the user’s eyes are vertically aligned (i.e., centred width wise) and horizontally aligned (i.e., centred height wise or are level) with respect to the fixation point. Usually, the fixation point on the screen is located around the centre of the screen. Therefore, during a video call, a user will typically position themselves such that their line of sight is included in a fixation plane that is vertical and perpendicular to the screen. Because the fixation point lies on the line of sight, the fixation point also lies on the fixation plane. In some cases, when a screen is pivotable about a horizontal axis, the screen is slightly angled with respect to the user. In this case, a user’s line of sight may not be perpendicular to the screen despite lying in the fixation plane. In other cases, during a video call, a user will position themselves (or the screen) such that their line of sight is generally perpendicular to the screen. Preferably, when the device is in use, a user’s line of sight is included in a fixation plane that is generally perpendicular to the screen; to a first plane defined by the first end of the body; and / or to a second plane defined by the second end of the body. For example, the first plane and the second plane may be generally parallel to each other. Preferably, the fixation plane is generally vertical. More preferably, when the device is in use, a user’s line of sight is perpendicular to the screen; to the first plane; and / or to the second plane. In embodiments comprising an upper panel and / or a lower panel, it is preferred that the fixation plane is generally perpendicular to the upper panel and / or to the lower panel. For example, the upper panel and the lower panel may be generally parallel to each other. Preferably, the device is configured for use when the fixation point (e.g., on the screen) is aligned with a centre of the second end of the body. As such, in a particularly preferred option, the fixation plane bisects the body. As discussed above, the body comprises a camera or a camera receiving means positioned such that the camera or a camera received by the camera receiving means faces the inner volume of space enclosed by the body. Preferably, the camera or the camera receiving means is positioned such that an optical axis of the camera or a camera received by the camera receiving means extends into the inner volume of space enclosed by the body. More preferably, the camera or the camera receiving means is positioned such that an optical axis of the camera or a camera received by the camera receiving means intersects the line of sight at an angle. In other words, more preferably, the optical axis and the line of sight are coplanar or share a common point. Although not essential, preferably, the optical axis and the line of sight lie in the fixation plane. The optical axis and the line of sight or not coincident. Preferably, the optical axis and the line of sight intersect each other at an angle of from 45° to 135°, more preferably at from 70° to 110°, still more preferably at from 85° to 95°, most preferably at around 90°, e.g., the optical axis and the line of sight are generally perpendicular to each other. Preferably, the camera or the camera receiving means is disposed on an inner surface of the body or is disposed in the body. Preferably, a lower region of the body comprises the camera or the camera receiving means. More preferably, the camera or the camera receiving means is disposed on the inner surface of the lower region of the body or is disposed in the lower region of the body. In embodiments wherein the body comprises a lower panel, it is preferred that the lower panel, optionally in combination with a side panel, comprises the camera or the camera receiving means. Preferably, the camera or the camera receiving means is disposed on the inner surface of the lower panel or is disposed in the lower panel (optionally in combination with being disposed in a side panel). Preferably, the camera or the camera receiving means is positioned on or in the body such that the optical axis of the camera or a camera received by the camera receiving means does not pass through the first end (or the first plane defined by the first end) or the second end (or the first plane defined by the second end). More preferably, the camera or the camera receiving means is positioned on or in the body such that the optical axis is generally parallel to the first plane defined by the first end of the body; to the second plane defined by the second end of the body; and / or, when the device is attached to a screen for use during a video call, to the screen. Preferably, in embodiments comprising a panel, the camera or the camera receiving means is located on an inner surface of or in the panel. Preferably, when the camera or the camera receiving means is located on or in a panel, the optical axis of the camera or a camera received by the camera receiving means extends generally perpendicularly to the panel. In embodiments comprising two panels that are opposite to each other, it is preferred that the optical axis terminates at the inner surface of a panel opposite to the panel on or in which the camera or the camera receiving means is located. Preferably, in embodiments comprising a lower panel, the camera or the camera receiving means is located on an inner surface of or in the lower panel. Optionally, the camera or the camera receiving means may be located in the lower panel in combination with a side panel. Preferably, the device is configured such that the optical axis of the camera or a camera received by the camera receiving means is generally vertical For example, in embodiments comprising a lower panel, the device is configured such that the optical axis of the camera or a camera received by the camera receiving means is generally perpendicular to the lower panel. Preferably, the camera or the camera receiving means is positioned centrally (more preferably, the optical axis of the camera or a camera received by the camera receiving means extends from or through a central point) with respect to the width and / or the depth of a lower region of the body. Preferably, the camera or the camera receiving means is positioned centrally (more preferably, the optical axis of the camera or a camera received by the camera receiving means extends from or through a central point) with respect to the width and / or the length of the lower panel of the body. Preferably, the optical axis is generally vertical with respect to the body and / or lies in a vertical fixation plane that bisects the body. Preferably, the camera or the camera receiving means is positioned between the first end of the body and the two-way mirror. In a preferred embodiment, where the body comprises a lower panel, the camera or the camera receiving means is located in a central region (or the centre) of the lower panel and is configured such that the camera or a camera received by the camera receiving means has an optical axis that is generally perpendicular to the lower panel. The two-way mirror is oriented (or positioned) (e.g., with respect to the camera or the camera receiving means) to reflect an image of the user (generally, to reflect an image of the scene facing the first end) towards the camera or the camera receiving means to provide the perception that a user’s line of sight and an optical axis of the camera or a camera received by the camera receiving means are generally coincident (or coaxial). A two-way mirror is also known as a ‘one-way mirror’, ‘one-way glass’, a ‘half-silvered mirror’, and a ‘semi-transparent mirror’. A two-way mirror comprises a transparent pane, for example a pane of glass or transparent plastic such as an acrylic. The transparent pane, typically a surface of the transparent pane, is treated or otherwise adapted such that the pane reflects a percentage of total light while allowing the remaining percentage of total light to travel through the pane. Preferably, the two-way mirror is planar. Preferably, the two-way mirror is generally square- or rectangular-shaped. Preferably, the two-way mirror has a width equal to the width of the inner volume of space enclosed by the body. For example, where the body comprise a first side panel and a second side panel, the two-way mirror has a width generally equal to the width from the first side panel to the second side panel. Preferably, the device is configured such that the two-way mirror extends across the entire (e.g., fully occludes the) aperture defined by the body. To avoid doubt, as the two-way mirror is typically oriented (or positioned) at an angle with respect to the body, the length of the two-way mirror may be greater than the height of the inner volume of space enclosed by the body. Preferably, the two-way mirror defines (or lies in) a mirror plane. Preferably, the two-way mirror (or the mirror plane) is orientated at an angle with respect to the optical axis such that, when an image of the user is reflected by the two-way mirror towards the camera or a camera received by the camera receiving means, the perception that the line of sight and the optical axis are generally coincident may be provided. Preferably, the optical axis (and / or the line of sight) intersects the two-way mirror (or the mirror plane) at an angle of from 22° to 68°, more preferably at from 35° to 55°, still more preferably at from 42° to 48°, most preferably at around 45°. It is preferred that the optical axis and the line of sight intersect at a reflection point lying on the two-way mirror (or the mirror plane). Preferably, a bisecting line extending through the reflection point on the two-way mirror and normal to the two-way mirror bisects the angle at which the optical axis and the line of sight intersect. Preferably, the two-way mirror forms a cross-sectional ‘Z’ shape with opposite sides of the body. More preferably, the two-way mirror forms a cross-sectional ‘Z’ shape with an upper region and a lower region of the body. In embodiments comprising a pair of opposite panels (e.g., an upper panel and a lower panel, or a first side panel and a second side panel), the two-way mirror preferably forms a cross-sectional ‘Z’ shape with a pair of opposite panels. Preferably, the two-way mirror is oriented (or positioned) at an angle of from 22° to 68°, more preferably at from 35° to 55°, still more preferably at from 42° to 48°, most preferably at around 45° with respect to: the body; a lower region and / or an upper region of the body; a panel of the body, such as the upper panel or the lower panel; a pair of opposite panels of the body; or, preferably, the lower panel and the upper panel of the body. As discussed above, the body has a first (e.g., front) end and a second (e.g., rear) end. Preferably, the first end is defined by a front edge of the body and / or the second end is defined by a rear edge of the body. Preferably, a first edge of the two-way mirror is disposed proximal to or at the first end (or front edge) of the body and / or a second edge of the two-way mirror (e.g., opposite to the first edge) is disposed proximal to or at the second end (or rear edge) of the body. More preferably, the first edge of the two-way mirror is disposed proximal to or at an upper region of the first end (or front edge) of the body and / or the second edge of the two-way mirror (e.g., opposite to the first edge) is disposed proximal to or at a lower region of the second end (or rear edge) of the body. Preferably, an edge (e.g., the second edge) of the two-way mirror rests on the inner surface, more preferably on the inner surface of a lower region of the body. In embodiments comprising a lower panel, it is preferred that an edge (e.g., the second edge) of the two-way mirror rests on the inner surface of the lower panel. In embodiments comprising an upper panel, it is preferred that the first edge of the two-way mirror is disposed proximal to or at a front edge of the upper panel. Preferably, the front edge of the upper panel defines, in part, the first end of the body. In embodiments comprising a lower panel, it is preferred that the second edge of the two-way mirror is disposed proximal to or at a rear edge of the lower panel. Preferably, the rear edge of the lower panel defines, in part, the second end of the body. In a preferred embodiment (described throughout this paragraph), there is a device for providing the perception of eye contact during a video call, the device comprising a body and a two-way mirror. The body comprises an upper panel, a lower panel, a first side panel, and a second side panel. The body encloses an inner volume of space (e.g., the body is hollow or tube-shaped) and is removably attachable to a screen for use during the video call. The body comprises a first (preferably, open) end for disposing in the direction of a user and a second (preferably, open) end, opposite to the first end, for disposing in front of the screen. The body further comprises a camera or a camera receiving means positioned such that the camera or a camera received by the camera receiving means faces the inner volume of space enclosed by the body. Preferably, the lower panel comprises the camera or the camera receiving means. Preferably, an optical axis of the camera or a camera received by the camera receiving means is perpendicular to and / or central with respect to the lower panel. The two-way mirror is disposed in the inner volume of space and is oriented (or positioned) to reflect an image of the user towards the camera or the camera receiving means to provide the perception, when the user is in a pre-defined position, that a user’s line of sight and the optical axis of the camera or a camera received by the camera receiving means are generally coincident (or coaxial). Preferably, the two-way mirror is disposed at an angle of around 45° with respect to the optical axis and / or with respect to a panel (or opposite panels), such as the lower panel (or lower panel and upper panel), of the body. Where the context allows, any further feature or combination of features described above may be incorporated into this preferred embodiment. Preferably, the body is reversibly collapsible from a first (interchangeable with the term ‘expanded’) form, e.g., for use during a video call, into a second (interchangeable with the term ‘flattened’) form, e.g., for stowing. More preferably, the body is reversibly collapsible from the first form into the second form without disassembling the body and / or without disassembling the two-way mirror from the body. All embodiments of the device described herein may optionally be reversibly collapsible. Preferably, in the second form, the body is substantially flat-packed or is flat-packed. In other word, in the second form, it is preferred that elements of the body (e.g., structural elements of the body, or panels of the body and / or portions thereof) are stacked and / or are parallel to each other. Preferably, the body is configured to reversibly collapse inwardly. More preferably, the body is configured to reversibly collapse into the volume of space enclosed by the body in its first form. Preferably, e.g., in embodiments where the body is cuboid-shaped, one pair of opposite sides of the body are configured to collapse inwardly, e.g., to collapse into the volume of space enclosed by the body in its first form. In embodiments comprising a first side panel and a second side panel, it is preferred that the two side panels are configured to collapse inwardly, e.g., to collapse into the volume of space defined by the body in its first form. Preferably, when a pair of opposite sides of the body (e.g., when the first side panel and the second side panel) are configured to collapse inwardly, each side collapses inwardly about a side hinge (interchange with the term ‘central hinge’). Preferably, a side hinge bisects its respective side (e.g., its respective side panel) and / or extends along the full depth of the body. Thus, preferably, the first side panel and the second side panel are configured to collapse inwardly about a side panel hinge that bisects its respective panel lengthwise and / or extends along the full width of the panel. Preferably, the body comprises a set of corner hinges, e.g., four corner hinges. The corner hinges, optionally in combination with the two side panel hinges discussed above, are preferably configured such that the body may reversibly collapsible from the first form into the second form. Preferably, in embodiments where the body is cuboid-shaped and has open ends, a corner hinge is disposed in each corner of the body and / or extends along the depth of the body. A corner hinge connects the edges of adjacent sides (e.g., of adjacent panels) of the body. A hinge (e.g., the side panel and / or corner hinges) may take any suitable form. For example, a hinge may be a living hinge or a pinion-based or ball bearing-based hinge or any two-part hinge. Preferably, a hinge is comprised from a flexible material such as a fabric or a textile, e.g., adhered to two elements, such as two panels, that the flexible material is configured to hinge together. In one example, the body may be comprised from card or cardboard and a hinge may be provided by a crease in the card or cardboard. In a preferred example, where the body comprises an upper panel, a lower panel, a first side panel, and a second side panel, in the second form: the inner surfaces of the bottom halves of the side panels abut and / or are flush with the inner surface of the lower panel, the inner surfaces of the top halves of the side panels abut and / or are flush with the inner surface of the upper panel, and the outer surfaces of the bottom half and the top half of the same side panel abut and / or are flush with each other. In some options, as discussed below, the two-way mirror may be sandwiched between panels when the body is in the second form. The body is removably attachable to a screen for use during a video call. Exemplary screens include laptop screens and PC monitor screens of various sizes. Typically, a screen is generally planar. Typically, the front of a screen comprises a rectangular display surface surrounded by a small border. Typically, the thickness of the border and the thickness of the display surface differ marginally or do not differ. Preferably, the body is removably attachable to a screen that is generally planar. Preferably, the body is configured for removable attachment to a top edge of a screen. More preferably, the body is configured to rest on or to receive a top edge of a screen. For example, the body is configured to hook onto a top edge of a screen. Preferably, the body comprises a screen receiving recess (interchangeable with the term a ‘longitudinal recess’) for receiving a screen, more preferably for receiving a top edge of a screen. Preferably, the screen receiving recess is positioned in an upper region of, and / or proximal to a second (rear) end of, the body. Preferably, an open top of the screen receiving recess faces the direction of a lower region of the body. In other words, preferably, the screen receiving recess faces downwardly in use. Preferably, the screen receiving recess is elongate and / or extends in the direction of the width of the body. Preferably, the screen receiving recess is separate to the securing member. Preferably, the body is configured such that, when it is attached to a screen, it can slide along the screen (e.g., along a top edge of the screen). Preferably, the body may be laterally repositioned with respect to a screen and / or is removably attachable to a screen at multiple positions along the width of the screen. This is advantageous when, for example, the fixation point on the screen is not central relative to the screen width wise, e.g., a video feed window may only be sized and positioned to cover the left-hand side of a screen. Preferably, the body is configured such that, when it is attached to a screen, the body (e.g., the second end or the rear edge of the body) abuts (e.g., rests on) a front surface of the screen. More preferably, when the body comprises the lower panel, the first side panel, and the second side panel, the rear edge of at least one (preferably, all) of said panels abuts (e.g., rests on) a front surface of the screen. This is advantageous because it provides for a high level of stability between the body and a screen it is attached to, particularly when the screen is in a non-vertical position. Preferably, the body comprises a rear extension overhanging (or extending over) the second end of the body. The ‘rear extension’ may also be termed an ‘overhang’ or an ‘extending lip’. Preferably, the rear extension is located in an upper region of the body. As such, preferably, the rear extension is an upper rear extension or a top rear extension. Preferably, in embodiments comprising an upper panel, the upper panel comprises the rear extension. In this case, the rear edge of the upper panel does not define the second end of the body. Preferably, in embodiments comprising an upper panel, the rear extension is a portion (e.g., a continuation) of the upper panel that extends past the second end (e.g., past the rear edge) of the body. Preferably, the rear extension comprises the screen receiving recess. More preferably, the screen receiving recess is accessible from a bottom surface of the rear extension. Preferably, a first elongate side wall of the screen receiving recess generally lies in the second plane defined by the second end of the body. Preferably, the first elongate side wall of the screen receiving recess and the rear edge of the body (e.g., the rear edges of the bottom panel, the first side panel, and / or the second side panel) generally lie in the same plane. Preferably, the screen receiving recess is open ended. This is advantageous because it allows the body to be attached to a screen having a width larger than the width of the body. Preferably, the two-way mirror is permanently mounted to the body. This provides for a robust device because the two-way mirror, which may be fragile, cannot unintentionally fall out of the body. This is particularly useful when the device is used with a laptop screen, for example, because laptops may be used on an unstable surface (e.g., a user’s lap) or may be transported between locations while the device is in use. Preferably, the two-way mirror is pivotable with respect to the body. More preferably, the two-way mirror is hinged to the body, e.g., the two-way mirror is permanently mounted to the body at a hinge. More preferably, the two-way mirror is hinged to the body at the first edge of the two-way mirror. Preferably, the two-way mirror pivots with respect to the body about an axis located at or around the first edge of the two-way mirror. The two-way mirror hinge may optionally be a hinge as described above in relation to the corner hinges and the side hinges. Preferably, the two-way mirror is hinged to the body at a position on the body proximal to the first end or the second end, preferably proximal to the first end. For example, the two-way mirror is hinged to the body at a position proximal to the front of the body. Preferably, the two-way mirror is hinged to an upper region of the body. For example, the two-way mirror is hinged to the body at position that is both proximal to the first end and in an upper region of the body. Preferably, the first end of the body is defined by a first edge of the body. Preferably, the two-way mirror is hinged to the body at or directly adjacent to the first edge of the body. More preferably, the two-way mirror is hinged to the body at or directly adjacent to the first edge in an upper region (or at the top) of the body. In embodiments comprising an upper panel, it is preferred that the two-way mirror is hinged to the upper panel. More preferably, the two-way mirror is hinged to the upper panel at or directly adjacent to a first (front) edge of the upper panel. Preferably, the first edge of the upper panel defines, in part, the first end of the body. Still more preferably, the two-way mirror is hinged to the inner surface of the upper panel directly adjacent to the first edge of the upper panel. As discussed above, preferably, a second edge of the two-way mirror rests on the inner surface of the body, more preferably on the inner surface of a lower region (or bottom) of the body. Preferably, the second edge of the two-way mirror is opposite to the first edge of the two-way mirror. Preferably, the second edge of the two-way mirror is not permanently attached to the body. In embodiments comprising an upper panel and a lower panel, when the two-way mirror is hinged to the upper panel (e.g., by its first edge), the second edge of the two-way mirror rests on the inner surface of the lower panel. Preferably, the second edge of the two-way mirror rests on the inner surface of the body at or proximal to the end of the body (i.e., the first end or the second end of the body) that is opposite to the end of the body to which the two-way mirror is hinged by its first edge. When the two-way mirror is hinged (or pivotable with respect) to the body, the two-way mirror may be pivoted from a first (interchangeable with the term ‘reflecting’) position to a second (interchangeable with the term ‘flush’) position. In the second position, the two-way mirror is preferably flush with an element of the body, such as a panel of the body. This function provides for several advantages, particularly in embodiments where the body is reversibly collapsible. By first pivoting the two-way mirror into the flush position, the body may then be collapsed into a flattened form for stowing. It is advantageous that the body can be collapsed into a flattened form while the two-way mirror remains mounted to it because this prevents accidental loss of the two-way mirror, and the two-way mirror is always protected by the body. Further, as the collapsed body is expanded from its flattened form, the two-way mirror may automatically pivot (e.g., drop) into its reflecting position due to gravity. This may serve to lock the body in the expanded form (e.g., to prevent the body from re-collapsing). As such, the body may be expanded from the collapsed form to the expanded form with minimum dexterity. Preferably, the two-way mirror is configured to move (e.g., to pivot), relative to the body, from a first (e.g., reflecting) position to a second (e.g., flush) position, wherein to collapse the body the two-way mirror must be in the second position. Preferably, when the two-way mirror is in the first (e.g., reflecting) position, the body cannot collapse from the first expanded form into the second flattened form. Preferably, for the two-way mirror to be in the first (e.g., reflecting) position, for example for the two-way mirror to move (e.g., to pivot) relative to the body from the second position to the first position, the body must be in the first expanded form. Preferably, the body comprises a securement means for securing or retaining the body in the second (flattened) form. As such, preferably, the body cannot be expanded from the second (flattened) form unless the securement means is unfastened and / or a force of attraction of the securement means is overcome. For example, the securement means may comprise hook and loop-based fasteners, a clip(s), or other common fastenings. More preferably, the securement means is a magnetic securement means. Preferably, the body may be expanded from the second flattened form to the first expanded form by overcoming the magnetic force(s) of the magnetic securement means. For example, the magnetic force of the magnetic securement means may be overcome by manually manipulating the body, such as by pulling opposite sides (e.g., opposite panels) of the body apart. Preferably, the magnetic securement means automatically engages as the body is collapsed from the first expanded form into the second flattened form for stowing. Preferably, the magnetic securement means comprises magnets positioned in or on the body. More preferably, the magnetic securement means comprises pairs of corresponding magnets positioned in or on the body. Still more preferably, the pairs of corresponding magnets are positioned in or on the body such that they correspond (e.g., align) when the body is collapsed into the second flattened form for stowing. For example, where the body comprises an upper panel, a lower panel, a first side panel, and a second side panel: a pair of corresponding magnets may by positioned at alternative locations on either side of a central hinge of a side panel. In this case, where the side panels collapses inwardly about the central hinge, the pair of magnets align and therefore engage when outer surfaces of the opposite side panel halves are flush with each other. Alternatively or in addition, a first magnet of a pair of corresponding magnets may be located on a side panel and a second magnet of the pair of corresponding magnets may be located on either the upper panel or the lower panel. In this case, where the side panels collapse inwardly, the pair of magnets align and therefore engage when an inner surface of the side panel is flush with the inner surface of the upper panel or the lower panel, as the case may be. Preferably, the body comprises a securing member that extends past the second end of the body (e.g., past the rear extension of the body). Preferably, the securing member is configured to secure the body to a screen, e.g., when the device is in use during a video call. More preferably, the securing member is configured to secure the body to the screen and retain the body in a particular position relative to the screen. Preferably, the securing member is configured to interact with (e.g. to reversibly attach to or tighten around or snugly receive) a rear of a screen, more preferably a rear surface of the screen. Therefore, preferably, the securing member is configured for disposing (at least in part) at the rear of a screen. For example, the securing member may be a strap, such as a continuous elastic strap or a two-part hook and loop strap. Preferably, the strap extends past the second end of the body from opposite sides of the body, more preferably from each of the first side panel and the second side panel. In one option, the securing member is a pocket, such as an elastic pocket. Preferably, the securing member is configured to reversibly attach to the rear surface of a screen by way of magnetic attraction between the securing member and the rear surface of the screen. In an alternative option, the securing member is configured to secure the body to a screen by way of magnetic attraction through the screen between the securing member (e.g., disposed at the rear of the screen) and the body (e.g., disposed at a front of the screen). As such, in one option, the securing member and the body clamp onto a screen by way of magnetic attraction. When the body is in the second (flattened) form, a second end region of the two-way mirror may protrude from the body, e.g., from the second end of the body. This is because the length of the two-way mirror, which is oriented at an angle in the volume of space enclosed by the body in the first form, is greater than the depth of the body. Preferably, the body comprises a protection member configured to, when the body is in the second (flattened) form, protect the second end region of the two-way mirror protruding from the body. Preferably, the protection member is configured to cover, cushion, and / or reinforce at least a first side of the second end region, more preferably the first side and a second side (i.e., both sides) of the second end region, still more preferably the first side and the second side of the second end region and the second edge of the two-way mirror. Preferably, the protection member extends past the second end of the body and optionally past the rear extension. Preferably, the protection member comprises at least one pad (e.g. a cushioning pad) attached to the body by a flexible member (or flexible flap), such as a flexible fabric or textile member. Preferably, the pad is sized to correspond with a side of the protruding second end region of the two-way mirror. For example, the pad has a width equal to the width of the two-way mirror. More preferably, the protection member comprises two pads. Preferably, a first of the two pads is sized to correspond with a first side of the second end region and a second of the two pads is sized to correspond with a second side of the second end region. In a first option, the two pads may be independently attached to the body by separate flexible members. In this case, preferably, the second (of two) flexible member extends along the length of a first side of the second end region and around the second edge of the two-way mirror. This is preferred such that the second pad may access the second side of the second end region while the second edge of two-way mirror is concurrently protected at least by the second flexible member. Alternatively, the first pad may be attached to the body by a first flexible member and the second pad may be attached to the first pad by a second flexible member. In this case, similarly, the second flexible member may extend around, and therefore protect, the second edge of the two-way mirror. Preferably, where the protection member comprises two pads, the two pads are configured to attract to each other magnetically through the second end region of the two-way mirror. As such, it is preferred that the two pads are retained on either side, respectively, of the two-way mirror by way of magnetic attraction. In a particularly preferred embodiment, the protection member and the securing member are the same member. As discussed above, the body comprises a camera or a camera receiving means positioned such that the camera or a camera received by the camera receiving means faces the inner volume of space enclosed by the body. Preferably, the camera is a wired camera (e.g., a web camera), a wireless camera, or the camera of a mobile device (e.g., of a mobile phone). Preferably, the camera receiving means is configured to receive a wired camera (e.g., a web camera), a wireless camera, or the camera of a mobile device (e.g., of a mobile phone). For example, the camera receiving means is configured to receive, at least in part, a mobile device (e.g., a mobile phone) comprising a camera. Preferably, the camera receiving means is configured to accurately position a camera with respect to the main body. A particular benefit of using a mobile device, in particular a mobile phone, is that the camera hardware is already in possession of the user. The camera or a mobile device comprising a camera may optionally rest on (e.g., remain in position by friction) or be adhered to an inner surface of the body, for example an inner surface of the lower panel. The camera receiving means optionally comprises a slot in the body for receiving a pre-defined (model of) mobile device comprising a camera. Preferably, a side panel of the body may comprise the slot. Optionally, the slot in a side panel of the body is positioned directly above an inner surface of the lower panel. In this option, the pre-selected mobile device may be inserted partially through the slot and rests directly on the inner surface. As such, in this option, the slot functions to keep the mobile device in position. Preferably, the camera receiving means may be a recess sized to receive (e.g., to snugly receive) a pre-defined camera or a pre-defined mobile device comprising a camera. In a first option, the recess may be open topped. In this option, the recess is preferably accessible from an inner surface of the body, more preferably from the inner surface of the lower panel. In other words, preferably, the recess is accessible via the inner volume of space enclosed by the body. For example, the pre-defined camera or the pre-defined mobile device may be dropped into the recess. In this first option, it is preferred that the recess is defined by four side walls and a lower wall. In a second option, the camera receiving means comprises a slot in the body for receiving a pre-selected (model of) mobile device comprising a camera. In this option, the camera receiving means further comprises a recess in the body, wherein the recess communicates with the slot. Preferably, the recess is configured to house at least a portion of the mobile device. More preferably, the recess is configured to snugly house at least a portion of the mobile device. Preferably, the lower panel of the body comprises the recess. Preferably, the lower panel or a side panel of the body comprises the slot. Preferably, the recess is configured such that when the mobile device (or a portion thereof) is inserted fully into the recess, the camera of the mobile device is positioned for providing the perception that the line of sight and the optical axis of the camera are generally coincident (when the user is in a pre-defined position with respect to the first end of the body). As such, preferably, the recess comprises an end wall, opposite to the slot, that functions as a stop. In this second option, it is preferred that the recess is defined by three side walls (e.g., inclusive of the end wall), a lower wall, and an upper wall. Preferably, the recess is covered (e.g., is a covered recess / is generally not open-topped). Preferably, the recess comprises a cut out (or window) for revealing only the camera of the mobile device when the mobile device is inserted fully into the recess. For example, the inner surface of the lower panel comprises the cut out (or window), e.g., which cut out (or window) defines an aperture communicating with the recess. The combination of the slot and recess serves to correctly position the mobile phone camera each (and every) time as well as to retain the mobile phone in position even when the device is disposed at a non-horizontal angle. Optionally, for example where the lower panel comprises the recess and the slot, the slot may be considered a continuation of or the entrance to the recess. The body (e.g., the panels of the body) may be comprised from any suitable material. The material of the body (e.g., the panels of the body) are preferably comprised from a material that is rigid and / or keeps its shape. Preferably, suitable materials for the body include foam board, a plastic such as acrylic, or cardboard. In a third aspect of the invention, there is disclosed a method of using a device as defined in the first or the second aspect of invention. Preferably, the method of using the device comprises one or any combination of two or more of: providing a device as defined in the first or the second aspect; expanding the device from a collapsed form to an expanded form; attaching the device to a screen, such as a laptop or PC monitor screen; laterally re-positioning the device with respect to the screen; attaching (e.g., inserting) a camera or a mobile device comprising a camera to or into a camera receiving means of the device; connecting the camera (e.g., by wire or wirelessly) to a video call control system; video calling another person or accepting a video call from another user; conducting a video call; terminating a video call; disconnecting the camera from the video call control system; removing the camera or the mobile device comprising a camera from the camera receiving means of the device; removing the device from the screen; and collapsing the device for stowing. In a fourth aspect of the invention, there is disclosed a method of conducting a video call, wherein at least two callers (e.g., both callers) each use a device as defined in the first aspect or the second aspect of invention. A particular advantage is that both callers perceive that eye contact is being made with them during a video call. This effect may serve to increase the level of rapport between video callers which can increase the effectiveness of remote psychotherapy, for example. The invention will now be described in more detail, without limitation, with reference to the accompanying Figures. In Figure 1, there is illustrated a device 1 for providing the perception (or illusion) of eye contact during a video call. The device 1 comprises a main body or enclosure 3 having a first (front) open end 5 and a second (rear) open end 7 opposite to the first open end 5. In use, the first open end 5 faces the user of the device and the second open end 7 is disposed directly in front of a screen (not shown), e.g., a laptop or PC monitor screen displaying a video image of the person the user is having a video call with. The enclosure 3 is cuboid-shaped and comprises an upper (top) panel 9, a lower (bottom) panel 11, a first (left, when viewed from the first open end 5) side panel 13, and a second (right) side panel 15 opposite to the first side panel 13. The panels 9, 11, 13, and 15 are generally rectangular in shape and are comprised from foam board having black-coloured surfaces. The upper panel measures 20 cm x 17 cm; the lower panel measures 20 cm x 15 cm; and the side panels measure 15 cm x 15 cm. The material forming the panels 9, 11, 13, and 15 is selected to minimise (or prevent) the passage of light through the panels and to minimise the degree of reflection of light from the inner surfaces 17 of the panels. The inner surfaces 17 of the panels 9, 11, 13, and 15 face the volume of space enclosed by the enclosure 3. The outer surfaces 19 of the panels 9, 11, 13, and 15 are the surfaces of the panels opposite to the respective inner surfaces 17, e.g., the outer surfaces 19 define, in part, the exterior of the enclosure 3. Each panel 9, 11, 13, and 15 is attached at two of its sides, which two sides are opposite to each other, to two separate panels of the other panels to form the generally open-ended, cuboid-shaped enclosure 3. That is to say, the upper panel 9 and the lower panel 11, and the side panels 13 and 15, are disposed parallel to each other. Each panel 9, 11, 13, and 15 has a thickness, a width, and a length. The width of each panel 9, 11, 13, and 15 is measured in the direction of from the first open end 5 to the second open end 7 of the enclosure 3. Thus, panels 11, 13, and 15 share the same width and the width of panels 11, 13, and 15 defines the depth of the enclosure 3. Upper panel 9 has a slightly larger width than panels 11, 13, and 15, as will become apparent below. The length of each panel 9, 11, 13, and 15 is measured in the relevant direction perpendicular to the direction of from the first open end 5 to the second open end 7 of the enclosure 3, e.g., in the relevant direction parallel to a screen (not shown) when the second open end 7 is disposed directly in front of the screen. Thus, the first and second side panels 13, 15 share the same length and the length of the first and second side panels 13, 15 defines the height of the enclosure 3. The top and bottom panels 9, 11 share the same length. The width of the enclosure 3 is defined by the length of the top and bottom panels 9, 11 in addition to the cumulative thickness of the first and second side panels 13, 15. The upper and lower panels 9, 11 are disposed between the first and second side panels 13, 15. The upper panel 9 comprises two side edges 21 that are opposite to each other. Each side edge 21 of the upper panel 9 abuts the inner surface 17 of an upper region 23 of one of the side panels 13, 15. Likewise, the lower panel 11 comprises two side edges 25 that are opposite to each other. Each side edge 25 of the lower panel 11 abuts the inner surface 17 of a lower region 27 of one of the side panels 13, 15. Each panel 9, 11, 13, and 15 comprises a first (front) edge 29 and a second (rear) edge 31 (not shown) opposite to the first front edge 29. The first edges 29 of the panels 9, 11, 13, and 15 together define a front edge 33 of the enclosure 3. The second edges 31 (not shown) of the panels 11, 13, and 15 together define a rear edge 35 (not shown) of the enclosure 3. For example, when the second open end 7 is disposed directly in front of a screen (not shown) the rear edge 35 of the enclosure 3 may rest directly on the screen or a border around the screen. The inner surfaces 17 of the upper panel 9 and the two side panels 13, 15 define two upper inner corners 37. Likewise, the inner surfaces 17 of the lower panel 11 and the two side panels 13,15 define two lower inner corners 39. Each inner comer 37, 39 comprises a flexible fabric 41 attaching the two panels, that define the respective corner, together. The flexible fabric 41 is adhered to a portion, extending from the respective inner corner 37, 39, of the inner surface 17 of each of the two panels defining that corner. The flexible fabric 41 is disposed along the full width of the respective inner corner 37, 39. As such, each inner corner 37, 39 comprises a corner hinge 41. Each side panel 13, 15 comprises a lower sub-panel 43 and upper sub-panel 45. The sub-panels 43, 45 have the same width as, but a length half the length of, their respective side panel 13, 15. That is to say, each side panel 13, 15 is split in half length-wise into sub-panels 43, 45. Each sub-panel 43, 45 comprises a sub-panel edge 47 that abuts a corresponding sub-panel edge 47 of the opposite sub-panel of the same side panel 13, 15. Similarly to each of the inner corners 37, 39, each pair of corresponding lower and upper sub-panels 43, 45 are attached together by a flexible fabric 49. The flexible fabric 49 is adhered to a portion, extending from the abutting sub-panels edges 47, of the outer surfaces 19 of each of the corresponding lower and upper sub-panels 43, 45. As such, each pair of corresponding lower and upper sub-panels 43, 45 comprise a side panel hinge 49. The enclosure 3 further comprises a two-way (otherwise known as a half-silvered or semi-transparent) mirror 51 that is planar and rectangular in shape. The two-way mirror measures 20 cm x 20 cm. The mirror 51 is disposed at an angle of around 45° to the upper panel 9 and the lower panel 11. The mirror 51 comprises an upper edge 53 that is disposed proximal to an front, inner comer (not visible) of the upper panel 9 defined by the inner surface 17 and the front edge 29 of the upper panel 9. The mirror 51 further comprises a lower edge 55 that rests on the inner surface 17 of a rear region of the lower panel 11. As such, the mirror 51 has a length in the direction of from its upper edge 53 to its lower edge 55. Because the mirror 51 is disposed at an angle of around 45° to the upper panel 9 and the lower panel 11, the length of the mirror 51 is greater than the depth of the enclosure 3. The mirror 51 is sized such that it has a width equal to the distance between (or slightly less than the distance between, to avoid frictional engagement with) the inner surfaces 17 of the two side panels 13, 15. As such, the mirror 51 comprises two side edges 57 that are disposed directly adjacent to the inner surfaces 17 of the side panels 13, 15. The mirror 51 has a first (front) surface 61 facing the direction of the first open end 5 and a second (rear) surface 62 (not shown) facing the direction of the second open end 7. The mirror 51 is hinged to the upper panel 9 of the enclosure 3 using flexible fabric 59. The flexible fabric 59 is adhered to an upper portion of the first surface 61 of the mirror 51 as well as the front edge 29 of the upper panel 9. That is to say, the enclosure 3 comprises a mirror hinge 59. Due to the four corner hinges 41, two side panel hinges 49, and mirror hinge 59, the enclosure 3 is a collapsible / foldable enclosure. To collapse enclosure 3 from its open (or expanded) state to its folded (or collapsed) state, the mirror 51 is pivoted about hinge 59 such that its second (rear) surface (not shown) abuts the inner surface 17 of upper panel 9. That is to say, the mirror 51 is pivoted about hinge 59 until the mirror 51 and the inner surface 17 of upper panel 9 are flush. (Because the mirror 51 has a length greater than the depth of the enclosure 3, in the folded state a lower portion of the mirror 51 will extend out beyond the rear edge 35 of the enclosure 3). Then, a force is applied (e.g., by a finger) to the outer surfaces 19 of the side panels 13, 15, preferably around the region of side panel hinges 49. This causes the sub-panel edges 47 to move in the direction of the volume of space enclosed by enclosure 3 until: the outer surfaces 19 of each pair of corresponding lower and upper sub-panels 43, 45 abut each other; the inner surfaces 17 of each lower sub-panel 43 abuts the inner surface 17 of the lower panel 11; and the inner surfaces 17 of each upper sub-panel 45 abuts the first surface 61 of the two-way mirror 51. To expand / unfold enclosure 3, the reverse procedure is followed. The enclosure 3 cannot expand / unfold further once the generally cuboidal shape is formed because corresponding sub-panel edges 47 contact each other which contact acts as a stop and, likewise, side edges 21, 25 of upper and lower panels 9, 11 contact the inner surfaces 17 of side panels 13, 14 which contact also acts as a stop. The side panel 15 of enclosure 3 comprises a lower slot 63, shaped and sized to snugly receive therethrough a predefined electronic device (not shown), preferably a wireless electronic device such as a mobile phone. The slot 63 communicates with a recess 65 inside lower panel 11. The recess 65, which is described more fully below, is configured to snugly receive, and accurately position, at least a portion of the electronic device (not shown). When the electronic device is positioned in the recess 65 via the slot 63, a portion of the electronic device may nevertheless extend out from the slot 63. The inner surface 17 of lower panel 11 comprises a cut out 67, directly above recess 65, sized and positioned to reveal only the optical (e.g., camera) elements of an electronic device positioned within the recess 65. The slot 63, recess 65, and cut out 67 are together configured for a predefined model of electronic device, for example an Apple iPhone® 14 or 14 Pro. Figure 2 is a generally front-facing view of the device 1 of Figure 1, although the enclosure 3 is collapsed / folded. The upper (top) panel 9, lower (bottom) panel 11, first (left, when viewed from the first end 5) side panel 13, and second (right) side panel 15 opposite to the first side panel 13 are visible. When the enclosure 3 is in its collapsed / folded form, it is suited for storage and transport. Figure 3 is a side view of the device 1 of Figure 1, in its unfolded / expanded state and with its second open end 7 (not shown) disposed directly in front of a first surface 68 of a laptop screen 69. The rear edge 35 of the enclosure 3 rests directly on the front surface 68 of the screen 69. From this perspective, a rear extension 71 of upper panel 9 is visible. The rear extension 71 is a continuation of panel 9 that extends beyond the rear edge 35 (defined by the rear edges 31 of panels 11, 13, and 15) of the enclosure 3. As such, the rear extension 71 has the same length as upper panel 9 and overhangs the rear edge 35 of the enclosure 3. The rear extension 71 comprises a longitudinal recess 73, in its lower side 75, along the full length of the rear extension 71. The longitudinal recess 73 is open-topped, and open-ended at each side of the rear extension 71. As illustrated in Figure 3, the longitudinal recess 73 is configured to receive an upper edge 77 of a screen 69 for temporarily attaching the enclosure 3 to the screen 69. Because the longitudinal recess 73 is open-ended, the enclosure 3 can be attached to screens having a range of widths, including widths that are larger that the width of the enclosure 3. Furthermore, during use, the enclosure 3 can be slid along the upper edge 77 of the screen 69 for locating the enclosure 3 appropriately relative to the screen 69. Extending backwardly (i.e., in the general direction of the rear extension 71 and distal to the enclosure 3) from the rear extension 71 is a first flexible flap 79 and a second flexible flap 81. The flaps 79, 81 are independent of each other and extend from an upper side 83 of the rear extension 71 (which upper side 83 is a portion of the exterior surface 19 of upper panel 9). The second flap 81 is the topmost flap. The flaps 79, 81 are made from a flexible fabric and have the same width as the width of the enclosure 3. Attached to the distal end of first flap 79 (i.e., distal to the rear extension 71) is a first protective pad 85. The first protective pad 85 has a first (inner) surface 89 and a second (outer) surface 91 opposite to the first surface 89. The first protective pad 85 measures 3 cm x 20 cm. Attached to the distal end of second flap 81 (i.e., distal to the rear extension 71) is a second protective pad 87. The second protective pad 87 has a first (inner) surface 93 and a second (outer) surface 95 opposite to the first surface 93. The second protective pad 87 measures 5 cm x 20 cm. The first and second pads 85, 87 have the same width as enclosure 3. The length of first pad 85 is around three fifths the length of second pad 87. The length of the second flap 81 is slightly larger than the cumulative length of first flap 79 and the first pad 85. As such, when the enclosure 3 is located on a screen 69 (as illustrated in Figure 3), the first (inner) surfaces 89, 93 can simultaneously contact a rear surface 70 of the screen. This is possible because the second flap 81 overlaps the first flap 79 and the first pad 85. Magnets (not shown) may be embedded in at least the inner surfaces 89, 93 of the pads 85, 87 for, in a first option, temporarily securing the pads 85, 87 to the rear surface 70 of the screen 69, for example, where the screen 69 comprises a ferromagnetic material. In a second option, the magnets (not shown) embedded in the pads 85, 87 may attract to corresponding magnets embedded toward the rear edges 31 of the panels 13, 15. In this second option, the screen 69 is temporarily clamped between the enclosure 3 and the protective pads 85, 87. In either option, use of the embedded magnets serves to temporarily securely attach the enclosure 3 to the screen 69. The protective pads 85, 87 serve a dual purpose, as illustrated in figure 4. In figure 4, there is illustrated a side view of the enclosure 3 in folded / collapsed form. As discussed above, when the enclosure 3 is folded / collapsed, a lower portion of the mirror 51 will extend beyond the rear edge 35 of the enclosure 3. This protruding lower portion of the mirror 51 may be damaged, for example, during transport of the folded / collapsed enclosure 3. However, the protective pads 85, 87 are configured such that: the second surface 91 of the first pad 85 may abut the second surface 62 of the mirror 51; the first surface 95 of the second pad 87 may abut the first surface 61 of the mirror 51; and the flexible flap 89 may extend across the lower edge 55 of the mirror 51. As such, the protective pads 85, 87 along with the flap 89 form a means of protecting the protruding lower portion of the mirror 51. Furthermore, as discussed above, the protective pads 85, 87 may comprise embedded magnets (not shown). Magnets in protective pad 85 may attract with corresponding magnets in protective pad 87 for keeping the pads 85, 87 in position relative the protruding lower portion of the mirror 51. Still further, magnets (not shown) in at least pad 87 may interact with corresponding magnets in any one or more of panels 11, 13, 15 for keeping the enclosure 3 in a folded / collapsed form when the enclosure 3 is stowed. Figure 5 is a diagram showing only lower panel 11 and side panel 15, without their full detail. In figure 5, dotted lines are used to illustrate features that are hidden from view. In particular, figure 5 illustrates the side slot 63 of side panel 15, and the recess 65 and the cut out (or window) 67 of lower panel 11, and how these features interact. The cross-sections of slot 63 and recess 65, taken parallel with plane A-A, are of the same shape and size. As such, slot 63 may be considered a continuation of recess 65. When the device is in use, the user may insert a predefined mobile device (not shown) into slot 63 (and through into recess 65) in the direction of arrow B. By ‘pre-defined’ mobile device, it is meant that the slot 63 and recess 65 are sized and shaped to snugly receive a particular model (or range of models) of mobile device, for example an Apple iPhone® 14 or 14 Pro. The recess 65 comprises two side walls 97, a lower wall 99, an upper wall 101, and an end wall 103. The end wall 103 acts as a stop for the mobile device. When the mobile device is fully inserted into the recess it will abut end wall 103. The pre-defined mobile device must have an optical (e.g., camera) element(s). When the mobile device is inserted optical element end first, with its optical element(s) facing the direction of inner surface 17 of lower panel 11, once the mobile device is fully inserted the cut out (or window) 67 will be located directly above the mobile device’s optical element(s). The cut out 67 is sized and position to reveal only the optical element(s) of the mobile device. As such, when the mobile device is in position in recess 65, the optical axis 105 of the optical elements) of the mobile device (not shown) will face upward in the direction of upper panel 9 (not shown). The optical axis 105 is generally perpendicular to lower panel 11. Once the optical axis reaches two-way mirror 51 (denoted by a short, thick line in figure 5), which mirror 51 is disposed at an angle of around 45° relative to optical axis 105, the optical axis 105 is diverted by around 90°. That is to say, the optical element(s) of the mobile device (not shown) may capture a video image of a scene facing the first open end 5 of the device 1 by way of reflection in the mirror 51. This provides for the perception (or illusion) that the user’s line of sight 107 and the optical axis 105 are coincident. Therefore, it will appear to the other caller, viewing the video feed captured by the optical element(s) of the mobile device, that the user of the device is making eye contact with them. The invention has been described with reference to a preferred embodiment. However, it will be appreciated that variations and modifications can be effected by a person of ordinary skill in the art without departing from the scope of the invention.

Claims

1. A device for providing the perception of eye contact during a video call, the device comprising a body and a two-way mirror, wherein the body:encloses an inner volume of space;is removably attachable to a screen for use during the video call;comprises a first end for disposing in the direction of a user and a second end, opposite to the first end, for disposing in front of the screen;comprises a camera or a camera receiving means positioned such that the camera or a camera received by the camera receiving means faces the inner volume of space enclosed by the body; andis reversibly collapsible from a first form into a second form, wherein the two-way mirror:is disposed in the inner volume of space and is permanently mounted to the body at a hinge; andis positioned to reflect an image of the user towards the camera or the camera receiving means to provide the perception, when the user is in a predefined position with respect to the first end, that a user’s line of sight and an optical axis of the camera or a camera received by the camera receiving means are generally coincident.

2. A device as claimed in claim 1, wherein, when the body is attached to a screen, the inner volume of space is bordered or further enclosed by the screen.

3. A device as claimed in claim 1 or claim 2, wherein the two-way mirror is hinged to the body at a position on the body proximal to the first end.

4. A device as claimed in any one of the preceding claims wherein the two-way mirror is configured to move, relative to the body, from a first position to a second position, wherein to collapse the body the two-way mirror must be in the second position.

5. A device as claimed in claim 4, wherein, when the two-way mirror is in the first position, the body cannot collapse from the first form into the second form.

6. A device as claimed in any one of the preceding claims, wherein the first form is a first expanded form and the second form is a second flattened form, wherein the body comprises a magnetic securement means for securing or retaining the body in the second flattened form, and wherein the body may be expanded from the second flattened form to the first expanded form by overcoming the magnetic force(s) of the magnetic securement means.

7. A device as claimed in any one of the preceding claims, wherein the body comprises a securing member that extends past the second end of the body, wherein the securing member is configured to secure the body to a screen.

8. A device as claimed in claim 7, wherein the securing member is configured to:reversibly attach to the rear surface of a screen by way of magnetic attraction between the securing member and the rear surface of the screen; or reversibly secure the body to a screen by way of magneticattraction through the screen between the securing member and the body.

9. A device as claimed in any one of the preceding claims, wherein the second form is a second flattened form, wherein, when the body is in the second flattened form, a second end region of the two-way mirror protrudes from the body, andwherein the body comprises a protection member configured to, when the body is in the second flattened form, protect the second end region of the two-way mirror protruding from the body.

10. A device as claimed in claim 9 as appendant to claim 7 or claim 8, wherein the securing member and the protection member are the same member.02 2411. A device as claimed in any one of the preceding claims, wherein the body is configured for removable attachment to a top edge of a screen.5 12. A device as claimed in any one of the preceding claims, wherein the bodycomprises a rear extension overhanging the second end and comprising a bottom surface, the bottom surface comprising a screen receiving recess, wherein the screen receiving recess is open ended.10 13. A device as claimed in any one of the preceding claims, wherein the bodyis generally cuboid shaped.

14. A device as claimed in any one of the preceding claims, wherein the body comprises an upper panel, a lower panel, a first side panel, and a second side15 panel.

15. A device as claimed in any one of the preceding claims, wherein the camera is a wired camera, a wireless camera, or the camera of a mobile device; or wherein the camera receiving means is configured to receive a wired camera, a20 wireless camera, or a mobile device comprising a camera.

16. A device as claimed in any one of the preceding claims, wherein the camera receiving means comprises a slot in the body for receiving a pre-selected model of mobile device comprising a camera.2517. A device as claimed in claim 16, wherein the camera receiving means further comprises a recess in the body, wherein the recess communicates with the slot, and wherein the recess is configured to house at least a portion of the mobile device.3018. A device as claimed in claim 17, wherein the recess is configured such that when the mobile device (or a portion thereof) is inserted fully into the recess, thecamera of the mobile device is positioned for providing the perception that the line of sight and the optical axis of the camera are generally coincident.

19. A device as claimed in claim 17 or claim 18, wherein the recess is covered and comprises a cut out for revealing only the camera of the mobile device when the mobile device is inserted fully into the recess.

20. A device as claimed in any one of the preceding claims, wherein, when the body is attached to the screen, a rear edge of the body is configured to abut a front surface of the screen.

21. A device as claimed in any one of the preceding claims, wherein, when the body is attached to the screen, the optical axis of the camera or a camera received by the camera receiving means is parallel to the screen (or to a plane defined by a rear end of the body) and the two-way mirror is disposed at an angle of around 45° to the screen and the optical axis.

22. A method of using a device as defined in any one of claims 1 to 21.

23. A method of conducting a video call, wherein at least two video callerseach use a device as defined in any one of claims 1 to 21.

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