French physicists Ros Kiri Ing and Mathias Fink have figured out how to turn any rigid surface into an interface for electronic systems. The technology—which the pair hope to commercialize via their Paris-based startup, Sensitive Object—uses one or two inexpensive accelerometers to detect finger taps on, say, a storefront display window or a keyboard drawn on a blackboard. A computer chip calculates the precise origin of each tap and translates that information into mouse clicks and keystrokes. Users might use the technology, for example, to “click” on a storefront mannequin’s hat to learn its price. Ing says the technique has advantages over other user interfaces under development because it can work with a surface as large as four square meters, and the number of “keys” can reach 544.
