LiFi

http://www.npr.org/player/v2/mediaPlayer.html?action=1&t=1&islist=false&id=457672585&m=457672586&live=1

Just was listening to this short podcast about the new LiFi technology that they have been developing in Estonia.  Really exciting, super fast communication method using lightwaves through your houses own electrical circuitry but they do bring up some of the considerably large downfalls.  First light can be blocked and that is the biggest crux to the whole idea.  How do you send light to the receiver when any little thing could cast a shadow on the connection?  Second, light can be obtrusive.  What if you are doing something like watching a movie where light can be obtrusive.  Still many obstacles to overcome but the speed benefits almost certainly will lead to further developments... If only Tesla had a bit more time and a bit more funding!!!