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Johnny Lee demonstrates head tracking with a Wii remote and a head-mounted pair of IR LEDs, so a screen acts like a window into a 3D scene as your head moves.

Pranav Mistry demos SixthSense, a wearable device that projects information onto the physical world and lets people interact with data through gestures. He also shows a paper "laptop" and says he will open-source the software.

A scene from the film Disclosure showing its virtual reality interface, including a 3D file system visualizer.

World Builder is a short film by Bruce Branit in which a man uses holographic tools to build a world for the woman he loves.