WiFi relies on invisible radio wave transmission, equipment power is increasing, and local electromagnetic radiation is bound to increase; The wireless signal passes through the wall and the network information is unsafe. These security risks are swept away in lifi. The spectrum is 10000 times larger than the radio spectrum, which means greater bandwidth and higher speed. The network setting hardly needs any new infrastructure. Lifi technology itself has its limitations. If the light is blocked, The network signal will be cut off. At present, a series of key technical products are hands-on by researchers. There is no commercial chipset. There is still a long way to go to thousands of households like WiFi
The statement 'WiFi has been widely used on a large scale' is inconsistent with the original text.