Li-Fi technology : A secured wireless connectivity

October, 2018

Li-Fi is a high density wireless optical networking technology which uses light-emitting diodes (LEDs) for transmission of data to deliver high-speed communication. It comes with low implementation and less maintenance costs and eases out interference and congestion problems that come with the usage of radio frequency.

Advantages of Li-Fi technology

  • Enhances Security - Li-Fi makes for a more secured source of connectivity in comparison to Wi-Fi. It is difficult to snoop into a wireless Li-Fi connection, as one needs to remain within the visibility of a user to utilize the same access point to hack the network.

  • High speed - Li-Fi combines high bandwidth with low interference providing high-intensity output speed of approximately one gigabit per second. The technology has high potential with the fastest recorded speed of more than 200 Gbps achieved under lab setup.

  • Consumes less energy - Li-Fi uses energy from visible light frequency spectrum instead of the RF frequency from cellular base stations, which make up to 50% of the overall mobile network power consumption. By adopting to Li-Fi technology, all these costs will be minimized.

  • An alternative WI-FI technology - Li-Fi acts as an alternative source of high-speed connectivity in environments where Wi-Fi services cannot be optimized. The technology is appropriate in smaller towns or villages where there are no cellular base stations and Wi-Fi does not work.

  • Supports Internet of Things - Li-Fi technology is tailor-made for the Internet of Things revolution. Smart home appliances and cars can communicate easily with each other using the Li-Fi system just by fitting a light receiver and lighting in the house. This technology also provides a high level of security which currently not possible through Wi-Fi technology.

Potential areas where LI-FI can be applied

The Li-Fi technology has multiple potential applications. It ensures network robustness and protects privacy as opposed to radio waves.

  • Connects data in sensitive areas - It is not safe to use Wi-Fi in aircraft, hospitals and chemical plants. There is a constant fear that the radio waves used by Wi-Fi may interfere with in-house devices, creating the risk of a spark. Li-Fi is best suited for these places as it uses light waves from LED lights installed within the promises.

  • Crucial for self-driving cars - The LED lights installed in the car's headlight and brake-lights can be used by self-driving cars to communicate with each other using Li-Fi technology. It can be useful to receive data from street lights and traffic signals, which will help in forming a secure traffic system.


Today everybody from corporates to individuals is completely internet-dependent and connectivity is driving every action in the economy. There is a constant surge to gain access to unlimited connectivity at high speed, which is cost-effective and energy-friendly. Also, with the radio wave spectrum getting saturated day by day, the search for an alternative technology is the need of the hour. Li-Fi has all these features in it and can be considered as the future of communication. It is anticipated that going forward industries will design layouts fitted with Li-Fi receivers in bulk to make maximum use of LED lights, leading to unlimited wireless Li-Fi connectivity.

– Pavan Mudholkar,
Sr. Research Analyst,
Infoholic Research