“A new technology shown off at this year’s Consumer Electronics Show in Las Vegas enables regular touch screens to sprout actual, physical buttons. Developed by a company called Tactus, it works by manipulating a transparent fluid inside the screen and causing it to press up against a top polymer layer, which bulges up and creates a button that can be pressed. The effects, shown in the video below, seem to promise that touch screens of the future won’t just be flat interactive displays, but dynamic devices with every bit as much tactile feedback as the keypads of old.”

http://www.rawstory.com/rs/2013/01/09/new-technology-has-touchscreens-sprouting-physical-buttons/

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