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The benefits of LEDs as a brighter, more efficient alternative to fluorescent lamps have become common knowledge. It may only be a matter of time before LEDs become the lighting source of choice for consumers. What is not so widely known is another beneficial use of LEDs—as a wireless network router. Light bulbs that produce their own wireless digital signal—light fidelity, or Li-Fi—are the subject of research around the world. While the technology has not reached the same degree of mainstream usability as its lighting counterpart, scientists have made notable gains this year.