What is LiFi?
Light Fidelity (Li-Fi) is a new ground-breaking technology which provides ubiquitous wireless access, connecting people and devices in residential, business, factory, and other settings with highly secure, cost-effective communications. Depending on the type of deployment and application, a benefit of LiFi is the capability of LED light bulbs to provide both illumination and network connectivity simultaneously and seamlessly.
LiFi is a form of Visible Light Communications (or 'Visual' Light Communications), and part of the broader field of Optical Wireless Communications (OWC). LiFi uses light emitting diodes (LEDs) to deliver networked, mobile-capable, high-speed communication. Primary implementations of LiFi utilize stand-alone transceivers or LED light bulbs, controlled by a driver that turns the LED on and off, to transmit encoded data. An optical sensor is used to receive the data, which is then decoded. The transmissions occur at rates of many millions of times per second, which is not perceivable by the human eye. Since LED light bulbs and other applications for LEDs are becoming ubiquitous, due to low cost and energy efficiency over other light sources, the number of LiFi enabled devices and types of applications are vast, in both residential and commercial, transportation, and government locations.
LiFi, like WiFi, enables devices such as computers, smartphones, and printers, televisions, speakers, headphones, and a vast number of devices under the Internet of Things (IOT) umbrella, to communicate bi-directionally without the use of radio frequency waves and without interference.