Virtual instruments become Physical

Lyndsay Williams created the SenseSurface — a modular system that allows you to literally stick a controller onto a display when you need it. The devices use an X/Y matrix on the backside of a typical laptop display coupled with custom designed movement sensors. Lyndsay claims that the apparatus is multitouch and low friction, leaves no marks, is programmable, scaleable, and limited only by the size of the screen. The cost?

Less than $100 in production. Girtonlabs website