Li-Fi: Experience the Internet 100 Times Faster Than Wi-Fi

With all of the new gadgets and inventions coming out these days, Wi-Fi would probably be the last thing that some of us would care to think about...
  1. Crooks

    If any of you folks have been keeping up with our Homepage, chances are that you would have probably read my article about PoWiFi, a new form of technology that can transfer small bits of electricity over WiFi. Now I don't know about you guys, but after I learned about that, I really couldn't think of any other new innovation that could drastically improve the concept of WiFi, but lo and behold, here we are yet again with a new invention that promises to change the way we access the internet. Meet Li-Fi, a new form of technology that promises to deliver internet to our devices at speeds that are up to 100 times faster than traditional Wi-Fi.

    As you may have already noticed, the technology has already been named Li-Fi, presumably to coincide with the idea of "light-speed" and light in general. Now speaking of light, a light source is required to utilize Li-Fi because believe it or not, the technology requires a light bulb to function. Along with a light bulb, you will obviously need an existing internet connection and a photo detector. Other than all of that, it works essentially the same way that Wi-Fi does but instead, it uses beams of light to carry the internet signal. This will be explained in the short info-graphic below.

    So as you now know, it uses light bulbs to transmit signals. This offers faster speeds, but one downside would have to be the fact that it's limited to exactly how light works. This means that Li-Fi cannot penetrate walls since light cannot go through walls, and Li-Fi cannot work outdoors under sunlight. This is arguably the biggest downside as of now so Li-Fi is not all that practical in every scenario that Wi-Fi currently is. One advantage it does have, however, is that Li-Fi doesn't interfere with other radio signals transmitted from other devices, so this technology could easily be used on somewhere like a plane for instance.

    The man behind all of this, Professor Harald Haas from Edinburgh University, first demonstrated this technology during a TED Talks segment back in 2011. A video of the segment can be found below. Now in terms of the speeds, it has been claimed that this new technology could be about 100 times faster than Wi-Fi. Through another demonstration last week, a LED bulb was able to transmit speeds at up to around 1GB per second but further studies have shown that it is possible to get up to around 224GB per second which is absolutely astonishing.

    No release date has been coined as of now, but this technology is certainly something to follow and to keep up to date with. What do you think? Would you invest into something like this? Leave your thoughts below!


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  1. Thephoenix9811
    Maybe it's just me but... This idea doesn't seem to be very well thought out at all. Using visible light, sounds cool and it's really fast, but what about if you want your curtains/blinds open? The sunlight would mess up your connection. So basically what we have here is a great way of sending data via a wireless network, assuming you live like a vampire or only want to browse the internet after sunset. Or have I misunderstood??
      Fanfare likes this.
  2. GrandTheftAutoV
    Its fast but don't go through walls
  3. olicvb
    Could receivers and transmitters be used to put the signal in other rooms ?
    1. Crooks
      I have no idea.
    2. Walteri
      most likely not :tongue: depending on if there's a wall in between.
  4. Fanfare
    So it's like fiber optic without the fiber?
    You'd still have a choke point at the sending and receiving end I'd imagine. WiFi is a lot faster than the internet it's connected to.
      SHiiFT likes this.
  5. Comit
  6. Waffle Text
    I think it's a great idea for the sidewalks of buildings in the downtown areas of large cities. I think it would be nice luxury to just have on every new light bulb... the only large issue I see - exactly who would pay for the internet connection? I like that this guy is thinking outside the box, though. Good for him!
      nicholasbroo likes this.
    1. nicholasbroo
      Mostly it'll be perfect for insiders and their lack of security issues. People wouldn't be able to get past that prior to being in that 'spotlight' and that's what's going to revolutionize hackers.
  7. thock09
    Seems almost useless to the modern average day consumer. Even if this could boost WiFi up to 100 times like it says, your speed would still only be as fast as the connection itself. Me personally, my WiFi speed and plugged into wall speed is almost the same, so there would be no practical reason for me to have this. Interesting post though!
      Fanfare likes this.
    1. XeXLosSantos
      No it uses light to travel, not radio waves. So it would be faster. It's not like you'e connecting your modem/router to a light bulb...
    2. olicvb
      I think what he was saying is that his internet speed is not gonna get faster because of a light, of course the lifi would get his connection between his computers faster but the download speed is gonna stay the same.
  8. nicholasbroo
    Awww, you deleted my comment, I cry. <3 you though. Still I Love ted conventioneer articles.
      Crooks likes this.
    1. Crooks
      Just try to keep stuff on topic bud :smile:
    2. nicholasbroo
      I'm sorry, I was being sarcastic as I'm so focused on making people laugh and so far it's working. Sorry Crooks. <3
    3. Crooks
      No problem :wink:
  9. TheDivineZombie
    Great article, Crooks! This was a great invention to spotlight on the homepage.

    "...Li-Fi cannot penetrate walls since light cannot go through walls..."

    Could this disadvantage not be overcome by integrating these special light emitters with an optical cable? These could be used to transfer through walls, underground, etc.
    However, this would create a physical connection, but it could connect light bulbs throughout multiple rooms in a house for example.
  10. iExploit
    Practical applications of this at this moment for mass production for consumers and general public may not be profitable let alone successful. I can see this being used at the moment for companies that want more security and possibly even gov agencies that want to have connections but not have to worry about outside intrusions upon what radio waves have been known for.
    1. Stonerzard
      They just use closed circuit systems I'm pretty sure. The government agencies are pretty damn hard to hack for reasons like this, but yeah other than that I don't see any practicality in Li-Fi.
    2. iExploit
      Alot of Gov Buildings have WiFi along with being closed network. When dealing with technology like this it has its ups and down. For the applications of Li-Fi I like the idea of it and would gladly use it in my home. I hardly use WiFi anyways. You can read more at on this topic on how it is designed etc. The usage of transmitting data through LED light source is pretty insane.