Mobile gesture management interface

A student at the University of Potsdam, Sean Gustafson, has developed a full-featured interface that allows you to do anything with gestures - type text or draw. The secret ingredient is a tiny finger tracking camera that should always hang around your neck. To activate the interface, you need to show the letter L with a non-knowing hand, and draw with the other hand as if with a mouse. The system works surprisingly reliably.