WiFi relies on invisible radio wave transmission, the power of the equipment is getting higher and higher, and local electromagnetic radiation is bound to increase; wireless signals pass through walls, and network information is not secure. These security risks are "swept away" in LiFi. Spectral ratio The radio spectrum is 10,000 times larger, which means greater bandwidth and higher speed, and the network setup requires almost no new infrastructure. LiFi technology itself has its limitations. If the lights are blocked, the network signal will be cut off. Currently, A series of key technology products are "hands-on" by researchers, and there are no commercial chipsets yet. There is still a long way to go for thousands of households like WiFi. The following statements are inconsistent with the original:. ['LiFi technology is dedicated to transmitting signals with the help of lights.', 'WiFi technology has hidden dangers in information security.', 'WiFi is now widely used.', 'LiFi does not require any infrastructure to complete network setup.']