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What is Li-Fi? New things you did not learn about how it is better than Wi-Fi


Li-Fi — Sounds new, right? 

What is Li-Fi? Li-Fi (Light Fidelity) is a new technology, a wireless optical networking technology — an alternate to Wi-Fi (Wireless Fidelity). While Wi-Fi involves wireless data transmission, Li-Fi involves use of LEDs (light emitting diodes) to transmit data. 

Data is transmitted at very high speeds through Li-Fi technology. In fact, it can deliver 224 GB of data per second! Besides, it provides much better security compared to Wi-Fi. Owing to its high speed, the technology can be used widely in premises that are electromagnetic sensitive such as airplanes, nuclear power plants and hospitals.

How is Li-Fi beneficial?

  • Higher speeds compared to Wi-Fi
  • 10000 times frequency spectrum of radio
  • Considered more secure as unless there is a clear line of sight, data cannot be intercepted.
  • Prevents piggybacking 
  • Unimpeded by radio interference
  • Totally eliminates neighbouring network interference
  • As it doesn’t interfere with sensitive electronics, it is ideal for use in environments including hospitals and aircraft.

By using Li-Fi technology in all the lights in & around a building, a greater coverage area can be achieved compared to using a single Wi-Fi router. Li-Fi technology is presently being trialled by many companies and universities. It has received considerable investment from the EPSRC (Engineering and Physical Sciences Research Council). 

EPSRC is the main agency of the UK for funding research in engineering and physical sciences.

The drawbacks to Li-Fi include difficulties with mobility and need for a clear line of sight and lights to stay on for operation.