Benefits of Li-Fi (Light Fidelity)

Q.  Which of the following is/are true regarding Li-Fi technology?

1) It does not work under water unlike current radio frequency communication.
2) It cannot pass through walls.
- Published on 21 Feb 16

a. Only 1
b. Only 2
c. Both 1 and 2
d. Neither 1 nor 2

ANSWER: Only 2
 
  • Li-Fi works under water as well.
  • Though the inability of light rays to pass through walls and similar structures is seen as a major drawback of this technology, it is an advantage since restriction by walls provides more security to the network and eliminates the risk of the signal leakage to eavesdropping.
  • Visible light spectrum is available in plenty, unlimited, unlicensed and free to use.
  • Bulb gives light as well as internet access.
  • Normal LED bulb can be used and no special bulbs needed.
  • Low interference leads to very high data speed.
  • Not harmful, unlike RF that can interfere with electronic circuitry.
  • It can achieve about 1000 times data density of Wi-Fi, as light can be contained in an area.

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