Glasses-free 3D display with iPad

Glasses-free 3D visualization is possible on the iPhone and iPad with a to-be-released application designed by french engineers of the laboratory of informatics of Grenoble. In the technology, the position of the user's head is tracked with the device's front-facing camera, creating a convincing 3D effect that alters the viewer's change in perspective.

Requiring no special glasses, the visualization varies from the kind of effect used in many 3D technologies because it tricks the brain into believing that there is depth behind the screen, rather than that images are protruding from the glass.

http://www.youtube.com/watch?v=bBQQEcfkHoE