A very cool hack! I wonder how widely used head tracking systems are for gaming? I saw one at my friends, who plays a lot of flight simulators on his PC, and I

A very cool hack! I wonder how widely used head tracking systems are for gaming? I saw one at my friends, who plays a lot of flight simulators on his PC, and I guess basically the technology was quite similar to the Wii remote - IR-leds and a camera.