Switch for 'Li-fi'connection at home
 

Imagine that by simply turning on the light bulb in your room, you can also switch on your wireless Internet connection at home.

Well, it's a reality now, thanks to a leading British physicist of Edinburgh University who claims to have developed a technology which can send data through the same connection as a normal lamp.

Prof Harald Hass says the invention, dubbed D-Light, can send data faster than 10 megabits per second, which is the speed of a typical broadband connection, by altering the frequency of the ambient light in the room.

He says that other possibilities of the device – which he has dubbed 'Li-fi', or Light Fidelity -- include sending wireless data from "white space" in your TV spectrum or unused satellite signals.
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