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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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Thanks to WiFi we can watch movies, play games, and check email, from the comfort of the couch.

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And soon we may be able to repurpose our WiFi signals so we can turn on the coffeemaker or turn off the TV with a simple flick of a finger, from anywhere in the house.

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Researchers described their prospective system, called WiSee, at the International Conference on Mobile Computing and Networking.

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The idea is similar in concept to the Xbox Kinect,

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which uses cameras to recognize a game player's movements, and translates them into an action onscreen.

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But WiSee works without cameras.

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Instead, it uses the ambient wireless signals put out by our smart phones, laptops, routers and tablets.

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When we move, we alter the patterns of these WiFi signals.

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The WiSee receiver detects those disturbances and interprets the motions that cause them, like waving or swinging your wrists.

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Of 900 gestures tested, WiSee could identify 94 percent.

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The user assigns a particular motion to a specific gadget,

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the motion doesn't have to be the one that works in the real world.

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So if all goes well, you may actually be able to punch your lights out.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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