Immersive gaming experience using an head-tracking camera and a motorized pico-projector
Students from the University of Texas developed an immersive computer gaming experience - using head-tracking camera and a motorized pico-projector:
The demonstration used two games: a flight simulator and FPS military simulator. In the flight sim, you use your head as essentially a joystick to control pitch and roll angles. In the FPS, your head is the in-game player's head. When you look right, the in-game player looks right, and the projector pan/tilts to where you're looking. Pretty neat stuff!