Because finally, after many years of expectations and speculations, a new viable alternative to replace our two decades’ old Wi-Fi technology is here.
By Iffy Kukkoo
10 Jun, 2016
Let’s leave high speed broadband internet aside for a while. Because finally, after many years of expectations and speculations, a new viable alternative to replace our two decades’ old Wi-Fi technology is here. And it’s hundreds and hundreds of times faster! Based on visual light communication (VLC), Light Fidelity (Li-Fi) is a fully networked wireless communication technology which uses light to transmit data at speeds up to 226 gigabits per second. That’s right. 226.
Li-Fi uses light from LED bulbs as a medium for delivering data. It does this by switching the current to the LEDs on and off at a very high rate; the flickering is so fast it can’t be noticed by the human eyes. Afterwards, this flickering is converted into electrical signals, which in turn can be used for data transmission purposes.
The term Light Fidelity or Li-Fi was coined by Harold Haas, professor at the University of Edinburgh. He introduced the technology at TEDGlobal, revealing its comparative advantages to Wi-Fi and showing how Li-Fi is both more efficient and more secure than Wi-Fi. He even demonstrated a working prototype on the spot, using a standard desk lamp with a LED bulb to stream a high definition video in front of the audience.
Haas convincingly argued Li-Fi’s superiority claiming that