Li-Fi - Wikipedia, the free encyclopedia - http://en.m.wikipedia.org/wiki...
"Li-Fi […] is bidirectional, high speed and fully networked wireless communications, like Wi-Fi, using light." - Amit Patel
"Direct line of sight isn't necessary for Li-Fi to transmit a signal; light reflected off the walls can achieve 70 Mbit/s." - Amit Patel
I can't help but think how easy it would be to intercept the data. :) - Stephan Planken
Presumably slightly harder than with RF? - Andrew C (see frenf.it)
You could probably pick it up farther away (if it is visible). But this could be good news for people that are sensitive to RF energy. - Stephan Planken