What’s Li-Fi? How’s that 100 times faster than Wi-Fi?


Scientists achieved speeds of 224 gigabits per second in the lab using Li-Fi!! This technology changes everything about the way we use the Internet.

And now, scientists have taken Li-Fi out of the lab for the first time, trialling it in offices and industrial environments in Tallinn, Estonia, reporting that they can achieve data transmission at 1 GB per second – that’s 100 times faster than the Wi-Fi used on this day.

Let’s see how this thing works?

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The technology uses Visible Light Communication (VLC), a medium that uses visible light between 400 and 800 terahertz (THz). It works basically like an incredibly advanced form of Morse code – just like switching a torch on and off according to a certain pattern can relay a secret message, flicking an LED on and off at extreme speeds can be used to write and transmit. These flicking light falls on a receiver which interprets the data (interpret in the sense the particular number of blinks per second has a significant data like a number or a word)

And while you might be worried about how could we feel comfortable with all that flicking, don’t worry – we’re talking LEDs that can be switched on and off at speeds imperceptible to the naked eye.  The frequency will be extremely high.

There are so many advantages with Li-Fi over Wi-Fi. One of those advantages is, the data will be secure, unlike Wi-Fi where the radio waves passes through walls, in Li-Fi the light cannot pass through walls so data cannot be accessed by anyone else the other side. Which also means there’s less interference between devices.

Don’t get hurry searching the internet to order a Li-Fi connection;). Our homes, offices, and industry buildings have already been fitted with infrastructure to provide Wi-Fi, and ripping all of this out to replace it with Li-Fi technology isn’t particularly feasible, so the idea is to retrofit (add to something that did not have it when manufactured) the devices we have right now to work with Li-Fi technology.

If you wanna learn more watch the video specified above, where the man who invented Li-fi explains and demonstrates what Li-Fi actually is.

So, let me know, what do you think.