Li-Fi a Ray of Future

Nowadays everyone uses technologies like computers, smartphones and internet to accomplish their tasks. Generally sharing of information or data is done with the help of wired or wireless connection. Wireless communication has become a fundamental need of human being. In wireless category wifi is available for data transmission. The wireless data is transmitted by the radio waves but due to limitations of radio waves such as availability, efficiency and speed Dr. Harald Haas proposed Li-Fi technology. That means using the visible spectrum i.e. LED light to send the data. It can overcome the issues related to data transfer using wi-fi technology or radio waves.