http://mashable.com/2013/04/16/fujitsu-paper-touchscreen/
Dave Chase
We're quickly getting used to the fact that computer, smartphone and tablet screens are meant to be touched — but what about paper?
Fujitsu has developed a technology that detects objects your finger is touching in the real world, effectively turning any surface — a piece of paper, for example — into a touchscreen, DigInfo reports.
Dave Chase