The Wii controller is an infrared video camera capable of tracking up to four light sources. It also has a 3-axis accelerometer. It communicates via BlueTooth. This means any BlueTooth-equipped computer (like a PC or Mac) can use the sensors in the controller. Mr. Lee has videos of three proof-of-concept experiments:
- A multi-touch interface for manipulating an on-screen object by moving your fingers through the air (like in the movie Minority Report).
- An interactive whiteboard application
- A demonstration of head-tracking to produce virtual reality