Li-Fi

[TriplexDread]

Sounds promising, although I'm unsure how it would travel through walls? Hmmmm
Not watched clip yet but would think it would require LoS? (Line of Sight)

http://www.telegraph.co.uk/technolo...-100-times-faster-than-Wi-Fi-tests-prove.html

 

[EvanDavis]

although I'm unsure how it would travel through walls?

Strategically placed mirrors ?