What is Li-Fi Internet? Advantages, Disadvantages, LiFi vs WiFi

What is LiFi?

Lifi is basically a optical wireless network communication system. Li-Fi network can be powered by Light Rays from either the visual range, or the Infrared (IR) or Ultraviolet Region. A striking advantage of LiFi over Wifi is that it can boost the network speeds about 100 times faster that the conventional Wifi system available. Yes, finally a real and better competitor and alternative of Google Fiber is now available. Lifi is more advantageous than Google Fiber as the former runs wirelessly, while the latter still depends on wired connections.

Below we answer some common questions related to Li-Fi that is revolving around all of us since it is a new term common people are hearing today, though it is quite a familiar name in science industry from the past few years.

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Q: Who invented LiFi?

A: Herald Haas. He is the mastermind behind LiFi. He proposed the term in 2011 in the University of Edinburgh, UK. He is the co-founder of PureLifi, an OEM that commercializes LiFi products. Below this post is a video where Herald is explaining the technology.

Q: How does LiFi internet source transmit the network to the devices?

A: Through Light of course. The source can be the Tube Light or the Bulb placed in your room. As soon as you turn it on, you get access to the wireless visible optical network everywhere inside your room. It’s network coverage area is everywhere inside your room. So if you are under the light, it means you are receiving the network.

What is Li-Fi Internet? Advantages, Disadvantages, LiFi vs WiFi

Q: What are the Real Speeds of Lifi?

A: Well, when Lifi was tested under laboratory, the achieved speeds were about 224 Gbps (According to BBC) but it deteriorated under real life tests. Tested under real life conditions. the achieved speeds were up to 1 Gbps. Still this was an amazing speed to get via Wireless.

Q: How secure is LiFi?

A: Well, technically speaking, LiFi does not have any security mechanisms, but don’t panic, because it does not need any. Light cannot penetrate through walls to reach outside your workstation. And so, rest assured, it won’t be able to reach your neighbor in any ways. Practically it is more secure than a Wifi because even a Wifi can be hacked, but a Lifi is not accessible at all outside, thereby barring the hackers from the root! Bye Bye Hackers!

Q: What are the advantages of this network?

A: First advantage is speed. You can watch and download videos in no time. Browse new websites in a blink. Second Advantage is security. It cannot be hacked, as it cannot reach your neighbor via any means.

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Q: What are the disadvantages of this network?

A: Despite being extremely powerful network, it has some small operational disadvantages. To use the network, we need to keep the lights on all the time 24×7. And this generation is hooked to internet all the time, so it is expected that the bulbs and the tubes will glow in the daytime too unnecessarily thereby wasting lot of power. Also, you cannot enjoy playing online games or watching YouTube videos in a dark room or on bed at night time when you prefer to turn off the lights. Even low light won’t work, as it may slow the network.

Q: Li-fi vs Wi-Fi. What are the comparisons?

A: Both of them are wireless network connections but the former has a whooping speed hike than the latter. Lifi is 100 times faster than the conventional Wifi network. Lifi does not require password protection like Wifi, as the light source is bound not to get hacked, as it is confined within the room of operation. Wifi networks require wifi hotspot system which is entirely abandoned in Lifi.

That’s all about Li-Fi. Thanks for reading our post. I hope you have learnt something new from it. Do share this post with your friends and help them know it too. 🙂 I will return soon with more amazing posts. Till then, stay tuned! Before closing this webpage, don’t miss this amazing video where Herald Haas is explaining the Li-Fi Technology. It is indeed amazing. Below it is. Bye!

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Nirmal Sarkar is a BTech Engineering Student from the city of Joy, Kolkata. He is a part time blogger, and likes to write web articles on Android Stuffs and latest Freebies.

21 Comments
  1. Reply
    Rahul Roy April 30, 2017 at 9:28 am

    Really Nice Post sir

  2. Reply
    Dheeraj Singh April 8, 2017 at 9:21 pm

    Really Nice Post Bro! Thanks For Sharing

  3. Reply
    Goyal Khan February 28, 2017 at 10:24 am

    Thanks for sharing. Good Information. Good.

  4. Reply
    Monisha December 12, 2016 at 3:14 pm

    Gd one.
    WiFi can be carried from one place to another ie, hotshot.
    My question is that can we carry lifi from one place to another?
    Is the cost less for lifi when compared to WiFi?

    • Reply
      Nirmal Sarkar December 12, 2016 at 6:02 pm

      No, you cannot carry Lifi from one place to another. Firstly because it is designed to be a closed space network, like a broadband. Secondly, if you carry it outside, others can easily share your internet.

  5. Reply
    Jerry Geevarghese Viji August 25, 2016 at 12:43 pm

    Really Nice post…Thnx for sharing 🙂

  6. Reply
    Tawatchai May 7, 2016 at 11:37 am

    Impressive..!!!!
    Loved the way you’ve explained everything in such detail. Got to learn something new.
    Cheers buddy..!!!! 🙂

  7. Reply
    Laurie March 1, 2016 at 6:22 am

    Very interesting, I haven’t read a whole lot about Li Fi until this article. Thanks for sharing!

    • Reply
      Nirmal Sarkar March 1, 2016 at 7:23 pm

      Thank You very much Laurie for commenting. Keep visiting HiTricks. 🙂

  8. Reply
    Anam February 15, 2016 at 5:28 pm

    Nice Information about Li Fi. I would like to ask if any new idea which can be implemented in Li Fi or if its limitations (like range/obstacle interference) can be finished? Or if we are able to do such work that its limitations become less?

    • Reply
      Nirmal Sarkar February 16, 2016 at 12:22 am

      Well, the strength of the network depends on the intensity of the light. And it’s limitations is what is protecting it from being hacked by others. 🙂

  9. Reply
    Uzair January 29, 2016 at 8:56 pm

    Thanks for sharing. Good Information…

    • Reply
      Nirmal Sarkar January 29, 2016 at 10:05 pm

      You are most welcome Uzair. Thanks for commenting, Keep visiting HiTricks.

  10. Reply
    Prateek December 5, 2015 at 5:14 pm

    Perfect.. Eagerly waiting to read more about it and try hands on it.

    • Reply
      Nirmal Sarkar December 5, 2015 at 10:08 pm

      Thank You. Keep visiting HiTricks for more updates 🙂

  11. Reply
    Aniruddha December 2, 2015 at 4:36 am

    Very informative 🙂 Thanks for sharing

  12. Reply
    Memon Husen December 2, 2015 at 12:35 am

    Good one. Thanks for tutorials

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