Li-Fi technology means Light Fidelity technology which was proposed by Harald Haas (a German Physicist). As the name suggests Li-Fi is a data transmission technique which uses illumination for sending the data or light as a medium of communication. It transmits data with the help of an LED bulb having variation in its intensity which has a speed of actually faster than which human eye can follow. It is also known as optical wireless technology or visible light communication. This paper focuses to explore this amazing technology and give a relative study of Li-Fi with other wireless communication technologies like W-Fi. Wi-Fi is perfect for transmission of data having a wireless coverage within buildings. But Li-Fi provides better efficiency, higher bandwidth, better security and availability with a very high speed.
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