There's a nifty little free demo you may want to pick up that uses the iPad camera to do some head tracking and create a kind of faux 3D on your iPad display. We took a look at an early demo for this last month, and now the app has arrived for your downloading pleasure. Unlike stereoscopic 3D systems, i3D doesn't send two images to your eyes.
What i3D does instead is show you several scenes that change perspective as you tilt your iPad side to side and up and down. The effect does not depend on the gyros built into the iPad, but instead uses the camera to track the position of your head and render a
