Li-Fi for Dummies

Who would have thought we could connect to the Internet using lights? I certainly did not. Well, maybe not in 20 more years. Luckily , Professor Harald Haas of Edinburgh University has come to the rescue. Presenting :

Should work on the design tho

He first talked about the possibility during his talk at TED on July 2011. Sound interesting? Lets see what it does .

What is Li-Fi?

Light-Fidelity , similar to Wi-fi, it is a wireless communication technology that provides high speed through visible light, to be more exact , its category lies between infra-red and ultraviolet (remember your science lesson?).

Nerdy Version

Maybe it is more clearer here :

Yeah, Pink Floyd!

How does it work?

Li-fi uses off-the-shelf LEDs to transmit data incredibly fast, and also in a safe and secure manner. Data is transported by the light,encoded in subtle changes of the brightness [ted].

Basically how they imagined it to be

This means, the connection rely heavily on the brightness of the source. Hence, fog and any sort of blockage will affect the speed. (wait a minute…).

The Li-Fi discovery team is also looking at solar cells and solar panels in order to use existing infrastructure to implement this innovative idea.

How fast is it?

Gotta Go Fast!

FAST. SUPER FAST. Theoretically it is 100 time faster than the traditional wi-fi offering 1Gbps (1 gigabit/second) or (1 billion bits/second) or (1,000,000,000 bits/second). Wow.

It is now being tested in Europe. The laboratory tests confirmed a speed of 224GBps with Li-Fi.

Oh Great! Let’s fund this!

Hold your horses there, Professor Harald said [September 2015, ted] :

It’s very much a lab demonstration, a prototype. But my team and I are confident that we can take this to market within the next two to three years.

So, until then, let’s keep updated on it’s development yeah?

Will it replace our precious Wi-Fi?

Honestly, I do not think that it will replace Wi-fi, but more as a complement to it. I mean, you’re not gonna turn on your light in the bedroom to stream Youtube right. Well, you get my point.

What else is it good for?

Education. Moving towards advanced learning-teaching method, this will really benefit the education institutes.

Green. The idea is to implement Li-fi into existing infrastructure , making the future cleaner, greener and ‘bright’er (excuse the pun).

Well, what else do you think its good for? hit me.

I’m feeling nerdy

This is just a brief explanation on what the future will hold. If you wanna know more, please visit purelifi . Exciting ay?

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