Li-Fi, a spinoff of Wi-Fi technology, is the kind of technology that transmits and receives data by using a transceiver fitted with LED bulbs that can light a room as well. Li-Fi stands for “Light Fidelity." It is known as visible light communication (VLC) technology using white, blue and red color LED bulbs. It is a very fast and cheap communication system.
Li-Fi uses visible lights to send and receive data at the speed of ten gigabytes per second that is faster than a typical Wi-Fi system. You can download a full length high definition film in just 30 seconds using this amazing technology. Prof. Harold Haas was the first to come up with the idea of this technology. He explained that its mechanics are very simple. If the LED is on it transmits a digital 1 and if the light is turned off it transmits a 0. With LEDs being able to be switched on and off very easily and quickly, you need the LEDs and a controller that codes data into those LEDS. VLC technology also has an advantage over other types of light that contain rays like Gama rays, X-rays are dangerous for human beings. By using technology like Li-Fi, our future will be brighter, cleaner, greener and safer.
Li-fi technology is very easy to use, harmless, cheap and fast - but everything comes with its drawbacks. Because light cannot pass through a wall, moving around from one room to the other while using this technology will make having a LED in every room necessary. In practice, every LED bulb can be used in this method to transmit wireless data.
