Science News

Point and Click Touch Sensitive Shop Windows

Sat, 1st Jun 2002

Part of the show Surround sound stereo with only one speaker

Interaction expert Joe Paradiso from Massachussets Institute of Technology (MIT) Media Lab says that he can turn a shop window into an interactive 'touch screen'. This would allow shoppers to, for example, trigger demonstrations in the window, rotate displays, or pick things from a menu. This can be done, he says, simply by placing microphones in each corner of the window. When a shopper taps on the glass, the time it takes the vibrations to reach each of the microphones in turn can be used to pinpoint where on the glass a person is tapping. A computer can work out which 'button' on the glass the person wants to activate, and so change the display accordingly.

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