Reference:http://www.sciencedaily.com/releases/2014/07/140713155423.htm
Sisoft Company in Mexico has developed a new technology that could transmit audio, video and Internet across the spectrum of light emitted by LED lamps. This new technology, called Li-Fi or light fidelity.
LiFi could boast up WiFi perfermence by providing speed of the internet to offer safer data transfer and a transfer rate of up to 10 gigabytes per second. The Li-Fi device circulates data via LEDs that emit an intermittent flicker at a speed imperceptible to the human eye.
LiFi technology provide security as there is no way to hack the signal since the internet is transmitted by light. It is suitable for using in hospitals areas that use radiation apparatus and generally block or distort internet signal.
For wireless internet transmission, the mechanics is similar. The station developed by Sisoft of Mexico stands above the router device that distributes the internet signal and a lamp-LED is incorporated to maximize the speed of data transfer. Light will emulate an antenna, but only the electronic apparatus that has the receptor for the "optical audio" signal and is inside the range of the halo of light will have a connection.