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One of the trends in today's internet technology world is aggregation. We are looking for ways to combine the incomprehensible and thus the Internet of Things was born. But scientists went even further and in 2011 offered the world to combine light sources and data transmission and called this technology Li-Fi (Light Fidelity) The average data transfer rate according to the results of the experiment turned out to be higher in 100 times than a regular Wi-Fi network.

The technology uses visible light to transmit data at high speeds, turning LEDs on and off for tiny periods of time. "Flashing" such transmitters are so fast that the human eye cannot see the flicker – that is, they can also be used for lighting.

For the first time, technology stepped outside the labs in 2015. When the Etonian company Velmenni installed experimental devices in its office. After setting up, the speed reached 1 GB per second, which is impressive.

Such a technology can gradually replace the existing Wi-fi as two problems are solved at once: lighting and the Internet. Plus, the speed of data transmission is even redundant at the moment. The advantage of Li-fi technology is also that the user can quickly get information, for example, at a public transport stop under a lamp, or cars can update navigation maps or traffic situations simply by being close to such devices. The creation of a seamless network within large agglomerations will also be greatly simplified. (e.g. cities)

The only downside is the way the signal is propagated, which is the light. If there is no source of light, there will be no network. Therefore, the round-the-clock use of such technology in everyday life is still doubtful.