Publisher's Synopsis
Devices, systems and methods for using corrugated tessellation to create surface features are disclosed. In embodiments, a device comprises a touch-sensitive surface capable of being in a first configuration and a second configuration different than the first configuration. When the touch-sensitive surface is in the second configuration an input device may be provided that is not present when the touch-sensitive surface is in the first configuration. For example, the touch-sensitive surface can be a flat surface in the first configuration and can be a three-dimensional surface comprising a physical keyboard in the second configuration. In embodiments, a device, such as a mobile phone or a tablet computer, comprises a touch-sensitive display that comprises the touch-sensitive surface.