[ame=http://www.youtube.com/watch?v=bBQQEcfkHoE&feature=player_detailpage]YouTube - Head Tracking for iPad: Glasses-Free 3D Display‏[/ame]
MacStories reports that the really cool glasses-free monocular Head-Coupled Perspective 3D demo that was doing the rounds in April has been turned into a free iOS app called i3D, by the makers of the demo, Jeremie Francone and Laurence Nigay from the Laboratory of Informatics of Grenoble. The demo, which was based on Johnny Leeâ€™s 2007 Nintendo Wii demo, according to MacStories, used the iPad 2's front-facing camera to track the userâ€™s head movement to create 3D animation on screen. The initial video (see above) caused a sensation on YouTube, where it clocked up over 1.5 million views. The app features all the demos as seen in the video, and is also compatible with the iPhone 4 and 4th generation iPod touch. Needless to say, original iPad owners are out of luck as the app requires a front-facing camera to work.
Click here to download the free app: i3D for iPhone 4, iPod touch (4th generation), iPad 2 Wi-Fi, and iPad 2 Wi-Fi + 3G on the iTunes App Store
Source: iPad 2 Head Tracking + Glasses-free 3D App Now Available