LiFi: Communication at the speed of light and the emergence of the Internet of people

Without light there would not be life. But light will change the world once more. In 1880 Graham Bell made-in his own words-his greatest discovery: the photophone. Bell succeeded in transmitting sound over the waves of sun light. Bell's problem: the sun does not always shine. 125 years later French physicist Suat Topsu was able to apply Bell's innovation to LED lighting and LiFi-Internet over light waves-was born.

LiFi is much faster. It is healthier because it does not interfere with our bo...