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How LEDs Can Send a Coupon to Your Phone

Imagine stopping to look at something in a store and suddenly a coupon for that product appears on your smartphone. It’s possible through a technology known as Li-Fi, which uses the flickers from LED lights to communicate information to a sensor, such as a smartphone. 'Li-Fi is beginning to revolutionize the opportunities in retail because they communicate directly from the LEDs to another entity,' said Ken Black, co-chairman of E Source, a strategic partner of Touchstone Energy and NRECA’s Cooperative Research Network.

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