The Microsoft Xbox Kinect gaming console uses air-based gestures
captured via camera technology. A camera and a depth sensor together
measure the three-dimensional positioning of key joints on the player’s body and then track the body air gestures.
Kinect builds on software echnology developed internally by rare , a subsidiary of Microsoft game studio owned by Microsoft, and on range camera technology by israel ,which developed a system that can interpret specific gestures, making
completely hands-free control of electronic devices possible by using an inflared projector and camera and a special microchip to track the movement of objects and individuals in three dimensions