It can sense your location, so you can set your lights to turn on when you enter, turn off when you leave, or light your path as you walk down the hall, and so on.

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"You don't want to turn on the overhead light, " he says.

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He compares this to a battery-powered light, in which you hook up the wires and electrons flow to make a light bulb turn on.

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But when you crawl into the chair and reach up to turn on the lamp, you make two discoveries: The bulb in the lamp is more suited as a night light than a reading light.

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Every time you turn a light switch on or a faucet off you interact with the market.

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Each icon panel gets a light shade to make them stand out individually, and every time you turn on the phone, they all animate very briefly by lightly popping in and out.

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The Light Touch can turn that image into a touch-screen that you can type on or swipe through with the help of a holographic laser projection and infrared sensor at the bottom of the device.

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