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Harald Haas, a professor at Edinburgh University is a busy man. In 2011 he invented a wireless broadband technology that uses LEDs to send data at hundreds of times the speed of today’s wi-fi networks.
The system is known as li-fi (short for light fidelity) and offers compelling advantages over wi-fi.
Not only is it is more energy efficient, but it is also capable of up to 10,000 times the bandwidth of wi-fi. Many see li-fi as being complimentary to wi-fi …. http://www.stuff.co.nz