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The Boston Globe

Business

ByteLight brings GPS-like technology indoors

Using signals from LEDs, start-up aims to help shoppers find their way

Imagine this: You step into a vast department store to buy a new blender, and your smartphone leads you straight to the right aisle, and then lights up with a coupon for the KitchenAid model to your left.

The one remaining on the shelf has already been opened, so using your phone again, you summon a store clerk who finds a fresh box out back. Then you quickly pay with a wave of your phone over a small, glowing box that serves as a checkout register, which automatically adds points to your rewards account.

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