This cool concept is much like the Microsoft Omnitouch which allows for an interactive display from over your shoulder. In this particular case it will be projected from your Phone from where you hold it to your ear.
This concept is being worked on by designers at the University of Duisburg-Essen in Germany. Their idea is to be able to share projectors together or exchange content by using a side by side interactive touch display. You’ll get a MUCH better idea of what I’m talking about by viewing some of the video.
The concept is really cool but I wonder what the end product will look like. Hopefully it will look more professional and not like a old cell phone brick from the 80’s.