http://www.cnn.com/2004/LAW/02/17/peterson.trial/index.html
Quick bit from a artical taken from cnn.com
"
Peterson's attorney, Mark Geragos, argued that the information gathered through global positioning system technology was not accurate. GPS uses signals from dozens of satellites to show a receiver's position to within a few feet.
"If the FAA will not approve GPS for the landing of an aircraft, how can a court of law approve its forensic use in a capital case?" he said.
"
I'm just wondering if anyone else finds this a whole lot of hot air... I'm not an expert, but my experience with gps... has brought me back to my vehicle every single time I've gone cache hunting...