Interesting idea: a portable multi-touch
A project of Kitchen Budapest:
“The Portable Multi Touch is the easily transportable version of touch sensitive surface, where one can interact with the projected media with one’s fingers, hands, as well as more people at a time.
Our goal was to develop a multitouch that we can fold into a minimal size that is easy enough to be portable. We programmed a set of simple applications, where one can paint with hands, navigate a mind-map collaboratively, for example. We built this interface so we can learn and develop interesting and new kinds of contents for such interfaces, which are becoming more and more popular nowadays.”
Link to the project page at kitchen budapest