This is a great video from researchers at the University of Duisburg-Essen whcih demonstrates how we could all be using pico projectors integrated into our phones.

As you can see from the video having a projector built into the phone makes it far easier to start sharing everything from photos to organising a calander by seeing the other person's phone screen on a split screen at the same time as yours. It means you dont have to keep taking the phone away from your ear to touch the display each time you want to look at anything on your Smartphone.

Its the future people..

http://www.youtube.com/watch?feature=player_embedded&v=Qv6Wv8Nv6sI