What is LiFi ?
LiFi uses light waves to transmit data through the air. Any conventional LED light fixture can be turned into an access point to connect communicaton devices to the network, such as laptops, cellphones, tablets and many other, regardless if portable or stationary.
Other than VLC (visible light communication), which is defined as a point to point connection between two devices, LiFi creates a full scale, light based network similar to radio frequency based communication.
The electromagnetic spectrum suitable for LiFi communication ranges from 200 THz up to 800 THz, so both invisible (infrared) and visible portions of the light spectrum are used for data transmission.
This results in a significantly increased bandwidth compared to radio frequency spectrum (factor 2600). In the near future, that technology will reach its limits regarding available frequency bands, known as the „spectrum crunch“.