Li-Fi or Light Fidelity is a Visible Light Communication system running wireless communications travelling at very high speeds.
Li-Fi uses common household LED (light emitting diodes) lightbulbs to enable data transfer, boasting speeds of up to 224 gigabits per second.
OPERATION OF LI-FI
Li-Fi works by switching the current to the LEDs off and on at a very high rate, too quick to be noticed by the human eye. Li-Fi LEDs would have to be kept on to transmit data, they could be dimmed to below human visibility while still emitting enough light to carry data. The light waves cannot penetrate walls which makes a much shorter range, though more secure from hacking, relative to Wi-Fi.Direct line of sight is not necessary for Li-Fi to transmit a signal, light reflected off the walls can achieve 70 Mbit/s.
LI-FI VS WI-FI
These are some advantages of Li-Fi over Wi-Fi, which are listed below.

Read more: http://www.istylmagazine.com/news/technology/do-you-knw-that-li-fi-is-100times-faster-than-wi-fi/

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