I am interested in mobile phones with projectors and locative, or geo-tagged work. This video shows a new tool that uses a handheld device to set up an interactive area using a projector, a pico pencil — this thing will challenge reality. Images, messages, movies, etc could be “left” in place. When you came along with your projector phone and the right application, you could see and interact with the virtual content. Yes, I realize it would be a temptation to spammers and grafitti artists, but it sure is interesting.