Invented by Harold Haas of the University of Edinburgh in 2011, this new paradigm of internet and wirelessly powered devices, termed Li-FI, could change the world rapidly.
By receiving light from LEDs at an oscillating rate, information is transmitted to receivers which also collect energy to power the device. The light fluctuates at a rate that is too fast for the human eye to recognize so, though it is transmitting massive frequencies of information, it just looks like a steady stream of light.
The new technology is revolutionary because it can enable people to both power their computers and transmit data, blending solar power and Wi-Fi into one. It is also considered more secure than Wi-Fi because it doesn't pass through walls and can't be hijacked by outside forces.
The real kicker, though, is that because of the extremely high frequency of light, as opposed to older low-frequency Wi-Fi signals, it can pack much more information into the stream. A lot more. In experimental settings, it has been found to transmit information 100x faster than the 100mb Wi-Fi that is seen as top tier around the world, transmitting 224 gigabits per second!