Abstract: A gesture language for a device with multiple touch surfaces is described. Generally, a series of new touch input models is described that includes touch input interactions on two disjoint touch-sensitive surfaces. For example, a mobile device can include a primary display on a “front” side of the device, and a secondary display or touch-sensitive surface on the “back” side of the device, such as a surface that is opposite the primary display. Accordingly, the gesture language can include a series of “back touch” interactions with the touch-sensitive surface on the backside of the device. Example interactions include direct and indirect touch input on the back side, as well as simultaneous touch input on both sides of the device.

Abstract: Techniques for input based on interactions with a physical hinge are described. Generally, a new class of interactions involves user manipulation of a physical hinge in order to provide input to a computing device. These hinge-based interactions provide input to a computing system that can be leveraged to initiate one or more system-level commands or operations, initiate transitions between discrete views of content, interact with content displayed via one or more display devices, and so on. In an example, a sequence of two or more consecutive hinge angle changes is recognized as a hinge gesture to perform a particular operation, such as a transition between a single-tasking state and a multitasking state.

Abstract: Techniques for input based on interactions with a physical hinge are described. Generally, a new class of interactions involves user manipulation of a physical hinge in order to provide input to a computing device. These hinge-based interactions provide input to a computing system that can be leveraged to initiate one or more system-level commands or operations, initiate transitions between discrete views of content, interact with content displayed via one or more display devices, and so on. In an example, a sequence of two or more consecutive hinge angle changes is recognized as a hinge gesture to perform a particular operation, such as a transition between a single-tasking state and a multitasking state.

Abstract: A gesture language for a device with multiple touch surfaces is described. Generally, a series of new touch input models is described that includes touch input interactions on two disjoint touch-sensitive surfaces. For example, a mobile device can include a primary display on a “front” side of the device, and a secondary display or touch-sensitive surface on the “back” side of the device, such as a surface that is opposite the primary display. Accordingly, the gesture language can include a series of “back touch” interactions with the touch-sensitive surface on the backside of the device. Example interactions include direct and indirect touch input on the back side, as well as simultaneous touch input on both sides of the device.