A nice implementation of 3d interface for a mobile device by tracking you eye. This could be a very good use of the front camera, which you can find on most mobile these days. When you are not using it to video conference it could be doing eye tracking to make the interface look like its 3d.
Something similar is being done on the iphone by a free game called labyrinth. They are using the accelerometer to know when you are tilting the phone and adjust the image in the game to look like its 3d. Looks really good hope many more such implementations are developed.
You have to try the game to really see the 3d table effect. Hope the above pictures give you an idea.