used to capture and interpret specific gestures which allows a hands free control of an entertainment system this technology may use an infrared projector a camera a depth sensor and a microchip to track the movement of objects and individuals in three dimension this system employs a variant of image based three dimensional reconstruction the tracking device 124 may include a microphone integrated into or attached as a peripheral device to entertainment system 100 that captures voice data the microphone may conduct acoustic source localization and or ambient noise suppression alternatively tracking device 124 may be the controller of the entertainment system the controller may use a combination of built in accelerometers and infrared detection to sense its position in 3d space when pointed at the leds in a sensor nearby attached to or integrated into the console of the entertainment system this design allows users to control a game with physical gestures as well as button presses the controller connects to the console using wireless technology that allows data exchange over short distances e g 30 feet the controller may additionally include a u201c rumble u201d feature i e a shaking of the controller during certain points in the game and or an internal speaker the controller may additionally.