T(ether) combines motion capture with the iPad 2, turning the device into a virtual reality you can interact with while wearing specific gloves and a headset.
The system uses Vicon motion capture cameras to track the position and orientation of tablets, user heads and hands. The motion capture system consists of 19 cameras mounted on a frame, covering a tracked space of 14 by 12 by 9 feet, where the tracking of retro-reflective tags occurs. The cameras are connected to a server, which processes the marker data from each camera reconstructing spatial position and orientation. Apple’s iPad 2 tablets are used as a window to the virtual world.
It seems a little clunky right now, but in ten years I could see this being an incredible way to construct and manipulate 3D forms digitally.