News anchors on CNN used a big Perceptive Pixel system during coverage of the presidential primaries that boldly displayed all 50 U.S. Several early adopters have purchased complete systems, including intelligence agencies that need to quickly compare geographically coordinated surveillance images in their war rooms. When Han wants the display to access different files he taps it twice, bringing up charts or menus that can also be tapped. As many as 10 or more video feeds can run simultaneously, and there is no toolbar in sight. Han steps up to the electronic wall and unleashes a world of images using nothing but the touch of his fingers. Walking into his company’s lobby, one is greeted by a three-by-eight-foot flat screen. Jeff Han, a consulting computer scientist at New York University and founder of Perceptive Pixel in New York City, is at the forefront of multi-touch technology. Yet the technology is already being applied in more far-flung situations in which anyone without any training can reach out during a brainstorming session and move or mark up objects and plans. ![]() It is easy to imagine how photographers, graphic designers or architects-professionals who must manipulate lots of visual material and who often work in teams-would welcome this multi-touch computing. Engineers have developed much larger screens that respond to 10 fingers at once, even to multiple hands from multiple people. ![]() But in laboratories around the world at the time of the iPhone’s launch, multi-touch screens had vastly outgrown two-finger commands. The operations felt intuitive, even sensuous. The tactile pleasure the interface provides beyond its utility quickly brought it accolades. Images on the screen can be moved around with a fingertip and made bigger or smaller by placing two fingertips on the image’s edges and then either spreading those fingers apart or bringing them closer together. ![]() When Apple’s iPhone hit the streets last year, it introduced so-called multi-touch screens to the general public.
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