MIT Researcher develops PC with 3D Virtual True Touch
So the computer has a transparent Screen, a camera on the screen, a keyboard with track-pad behind the screen and a set of cameras above the keyboard. These components amazingly work together to give the user a Holographic view that adapts to the user's point of view. The user with his hands can operate projects on the computer in 3D. The prototype is still a little slow and has some ragged edges, but definitely has the potential to be something truly awesome!