CityWall LCD multitouch interactive display

Multitouch technology could be be the next big thing as far as computer interface go. and the Helsinki Institute for Information Technology, or HIIT recently announced a new 3D version of its multitouch LCD display called CityWall.

CityWall is an interactive multitouch project open to public experimentation at the Lasipalatsi medical center in Helsinki, Finland. Developed by the Helsinki Institute for Information Technology, CityWall currently offers passers-by a 3D GUI to explore the benefits and nuisances of urban nature. It’s able to recognize an unlimited number of fingers touching the screen and uniquely identify them.

Similar to other multitouch screens we’ve seen, CityWall uses a a rear-projection system involving multiple cameras, projectors, and infrared sensors. It presumably tracks reflected infrared light triggered by fingers touching the display screen, as seen in the NORTD DIY multitouch kit

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