Till now we have been using Wi-Fi as a means of wireless data communication within a fixed location. But the Wi-Fi has yet to gain desired speed for the users. Meanwhile, a very high-speed data communication system (nearly 224 gigabits per second) called 'Li-Fi' (Light Fidelity) has been developed in the recent years. Professor Harald Haas of the University of Edinburgh, after years of research, designed the system and coined the term 'Li-Fi' in 2011.

Both Wi-Fi and Li-Fi are wireless data communication systems and use electromagnetic waves for data transfer but Wi-Fi uses radio waves while Li-Fi runs on visible light. It will be interesting to have access to the newly devised VLC (Visible Light Communication) System aka Li-Fi.