Patent ID: 8446367

Claim:
A multi-touch input device comprising: a base; a working surface with an inside and an outside, the working surface disposed over the base forming a cavity between the base and the inside of the working surface; a light source integral to the multi-touch input device; a curved mirror disposed in the cavity; a camera focused on the curved mirror; a mechanism operable to provide movement data corresponding to movement of the multi-touch input device; and an interface configured to send the movement data and multi-touch data to a computer system via the interface, wherein: the curved mirror is operable to receive light reflected or scattered by multiple objects outside of the working surface onto the curved mirror and to further reflect the light into the camera, the camera is operable to receive the light reflected from the curved mirror, and the multi-touch input device is operable to process the light reflected or scattered by the multiple objects and reflected by the curved mirror to the camera to provide the multi-touch data that is sent to the computer system via the interface.