When the Kinect was introduced in November 2010 as a $150 motion-control add-on to Microsoft’s Xbox consoles, it drew attention from more than just video-gamers. A slim, black, oblong 11½-inch wedge perched on a base, it allowed a gamer to use his or her body to throw virtual footballs or kick virtual opponents without a controller, but it was also seen as an important step forward in controlling technology with natural gestures.
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