Using the infrared camera in the Wii remote and a head mounted sensor bar (two IR LEDs), you can accurately track the location of your head and render view dependent images on the screen. This effectively transforms your display into a portal to a virtual environment. The display properly reacts to head and body movement as if it were a real window creating a realistic illusion of depth and space.
More info over here.
Head tracking for the Wii
Posted on Friday, Dec 28 2007 @ 08:11 CET by Thomas De Maesschalck