Optical proximity sensor and eye tracker

A user interface system, including a display surface displaying thereon a plurality of controls representing different applications, a multi-faceted housing situated along a single edge of the display surface, including an eye-tracker mounted in a first facet of the housing, the first facet being distal from the display surface, the eye-tracker identifying a control on the display surface at which a user's eyes are directed, and a proximity sensor mounted in a second facet of the housing, the second facet being between the first facet and the display, the proximity sensor detecting a gesture performed by an object opposite the second facet, and a processor running the different applications, connected to the proximity sensor and to the eye-tracker, causing the application represented by the control identified by the eye-tracker to receive as input the gesture detected by the proximity sensor.