How to fool GPS - TED Ed

Todd Humphreys
[ link-1202-0001 ] Link to Youtube :

Todd Humphreys forecasts the near-future of geolocation when millimeter-accurate GPS "dots" will enable you to find pin-point locations, index-search your physical possessions ... or to track people without their knowledge. And the response to the sinister side of this technology may have unintended consequences of its own. This was filmed at TED x Austin in February 2012.