Methods and systems for controlling devices using gestures and related 3d sensor

A system for controlling a device using gestures, the system comprising:

• an infrared (IR) projector to generate modulated light;
• an IR camera to capture a three-dimensional (3D) image associated with a user of the device;
• and
• a computing unit communicatively coupled to the IR projector and the IR camera, the computing unit being configured to analyze the 3D image and, based on the analysis, to:
• identify a sensor area within a direction of a current line of sight of the user, the line of sight being an imaginary straight line between a position of eyes of the user and an object that the user views,
• identify a gesture made by the user substantially contemporaneously with the current line of sight,
• compare the gesture to one or more predetermined gestures associated with the sensor area;
• and
• based on the comparison, selectively provide to the device a command corresponding to the combination of the sensor area and the gesture.