Wi-Fi may be a thing of the past, even though Wi-Fi 7 is on the way. According with The Verge, the IEEE standards body that oversees Wi-Fi has released the IEEE 802.11bb light communications standard that will cover the emerging Li-Fi.
Instead of using wireless network signals, Li-Fi uses invisible (to the human eye, anyway) infrared light to provide light-based wireless optical connectivity at speeds up to 100 times faster than Wi-Fi.
Light can transmit signals without radio interference, and Li-Fi already has a competing standard, the International Telecommunication Union's G.9991. The Verge reports that this standard is used with data beam lamps from Signify. Another company called pureLiFi released the Light Antenna One system in February, which already meets 802.11bb standards. It's a unit that could fit into a smartphone, and the manufacturer claims it can deliver data speeds in excess of 1Gbps.
However, Light Antenna One is built to communicate with devices that are less than three meters away, and when transmitting it only has a 24-degree field of view. However, the maker of the Light Antenna One says it is ready to "enable the mass use of Li-Fi for the first time". Despite pureLiFi's claim of 1 Gbps, download speeds for Li-Fi are said to reach 224 Gbps, surpassing the average download speed of 40 Gbps expected for Wi-Fi 7.
Some of the advantages of Li-Fi include better security as signals are less likely to leak through walls. Li-Fi transmitters can easily be installed in light fixtures used in offices, and the higher data rates of Li-Fi would certainly provide very fast connectivity that Augmented Reality, Virtual Reality and gaming devices could benefit from.
In addition to faster download speeds, Li-Fi promises much lower latency.
LiFi is very good, but for indoor spaces since outside the "daylight" makes it essentially "useless".