Lifi, presumably to coincide together with the theory of “light speed” and light generally. A light source must use Lifi because believe it or not believe it, the technology takes a light bulb to work.
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Along using a light bulb, you’ll clearly require a photo detector as well as a current web connection. Other than all of that, it functions basically exactly the same manner that Wifi does but rather, it uses beams to carry the sign that is net. This is clarified in the info-graphic that is brief below.