The estimated speed of Internet access with the introduction of the new Li-Fi data delivery method will be 1 gigabit per second, which is 100 times faster than the usual Wi-Fi. Li-Fi uses the visible wavelength spectrum as opposed to radio waves. To use it, you need a light source in the form of an LED lamp connected to the Internet and a photo detector.
A few days ago, the operation of the device was successfully tested in Tallinn by the Estonian startup Velmenni. When transferring data with the light on, a speed of 1 gigabit per second was reached. However, this is far from the limit. Laboratory tests have shown the ability to achieve speeds of 224 Gb / s. According to the executive director of Velmenni - Deepak Solanki, this technology will reach the consumer within three to four years.
Li-Fi technology (from the English phrase "light-fidelity" - "light-fidelity") was developed by the British professor Harald Haas, who compared it to a shower, where parallel light rays are thrown instead of water streams. He is confident that in the near future, billions of wireless Internet access points will "switch to lamps."
The great advantage of Li-Fi is its absolute "harmlessness" to other radio signals, which is especially important in airplanes. The disadvantages (hopefully temporary) include the inability to work in direct sunlight, which interferes with the signal, as well as obstruction through walls.