What is Li-Fi? How does it work?

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This video talks about LiFi, which is an emerging technology for the future. Li-Fi claims to be 100 times faster than standard Wi-Fi. So what exactly is Li-Fi? and How does it work?

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References:
Dimitrov, S. and Haas, H. (2015). Principles of LED Light Communications. Cambridge: Cambridge University Press.

Fath, T., Heller, C. and Haas, H. (2013). Optical Wireless Transmitter Employing Discrete Power Level Stepping. Journal of Lightwave Technology, 31(11), pp.1734-1743.

pureLiFi™. (2017). The Home of LiFi - pureLiFi™. [online] Available at: http://purelifi.com/ [Accessed 26 Jul. 2017].

Mercer, C. (2017). Li-Fi explained | What is it, how it works & why Wi-Fi might be a thing of the past. [online] Techworld. Available at: http://www.techworld.com/data/what-is-li-fi-everything-you-need-know-3632764/ [Accessed 26 Jul. 2017].

Anon, (2017). [online] Available at: https://www.researchgate.net/publication/315845863_Light_Fidelity_LiFi [Accessed 26 Jul. 2017].

Hill, S. (2017). We’ve seen the light! Li-Fi is the future of wireless connectivity. [online] Digital Trends. Available at: https://www.digitaltrends.com/cool-tech/why-li-fi-light-internet-could-replace-wi-fi-in-10-years/ [Accessed 26 Jul. 2017].

Видео What is Li-Fi? How does it work? канала Ramy Fouad