LiFi (Light Fidelity), also known as visible light wireless communication, also known as optical fidelity technology, is a technology for transmitting data using light from a light bulb . A tiny chip implanted in a light bulb can produce wireless Internet connectivity similar to Wi-Fi hotspot devices. LiFi is designed to challenge existing Wi-Fi technology, but it currently has limitations. LiFi was originally conceived and later patented by Herald Haas and his team at the University of Edinburgh in 2011. Haas noticed that retrofit LED bulbs flash very quickly. The light bulbs flash at a rate of one million times per second. Such flashes are not visible and only a sensitive receiver can detect them. Using a microchip attached to the light bulb, these flashes can be used to send data. This way the LED bulb can quickly transfer a binary coding. This code can be understood by a Wi-Fi router. It's similar to a flashlight that sends Morse code, but much faster and uses a computer to understand the alphabet. Using standard LED lights, Haas and his colleagues created an Internet connection...