The technology was demoed on the show floor at GDC with a rudimentary first-person shooter. The player wears a visor (which changes the camera's view as the player looks around in real time) and holds a light gun peripheral. They can walk around the rolling sphere, which moves the player's in-game avatar around the level. Sounds too awesome to be true, doesn't it? Hey, we'd never lie to you. Check out a video demonstration of the device after the jump.
What? Did we try it out? No, unfortunately, we've got a thing about dizzy-puking in public.