Fujitsu have created a new technology which will enable you to extract and manipulate data from paper using a web cam and projector. Effectively turning paper into a touchscreen.
The system is designed to not react when you make ordinary motions on the surface. It can be operated when you point one finger, meaning the system serves as an interface. It even works for manipulating the view point for 3D CAD data using recognised gestures like forming a fist.
It hasn’t been in actual real life settings yet as it is currently at demonstration level, however, an example of how this technology could be used is to show detailed interactive data at a travel agents. A commercial version is said to be released in 2014.
Image by Debarshi Ray