SPECTRUM LIFI

Security is a major concern for all Wi-Fi users, since RF signals pass through walls and make Wi-Fi vulnerable. Security is not an issue of concern in a LiFi environment since the visible light signal is confined to the indoor environment and it has high security... LiFi can offer high density communication by using hundreds of LEDs on each bulb or lighting panel and can offer broadband connections to a large number of users by reusing the spectrum in larger areas... LiFi has the potential to significantly increase the speed of internet connection in multiuser indoor environments due to the broad bandwidth of the visible light, from 400 THz (780 nm) to 800 THz (375 nm).