A Bright Idea For WIFI
Sounds like a sure-fire recipe for a headache to me, but Wired has an article about a possible future WIFI development which will use flickering lightbulbs to transmit the data - limiting access to that data to the throw of the beam and securing places like the White House from nosey bandwidth thieves who happen to be having a muffin in a nearby coffee shop.
13th Feb 2009 - Tumblr