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LEDs Could Lead You Right to a Discount

When you go to the grocery store, chances are you find yourself hunting for at least a couple of items on your list. Wouldn't it be easier if your smart phone could just give you turn-by-turn directions to that elusive can of tomato paste or bunch of cilantro, and maybe even offer you a discount on yogurt, too? That's the idea behind ByteLight, a Cambridge, Massachusetts-based startup founded by Dan Ryan and Aaron Ganick. ByteLight aims to use LED bulbs—which will fit into standard bulb sockets—as indoor positioning tools for apps that help people navigate places such as museums, hospitals, and stores, and offer deals targeted to a person's location.

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