2-21-2011
http://yro.slashdot.org/story/11/02...m_campaign=Feed:+Slashdot/slashdot+(Slashdot)
Smart Phone Gets Driver Out of a Speeding Ticket
"The speed limit in the area was a mere 25 miles per hour and the  cop's radar gun shockingly clocked me driving over 40 miles per hour."  
Once in court Katta asked the officer the last time he attended radar  gun training, when the device was last calibrated, or the unit's model  number  none of which the officer could answer. 
"I then presented my  time stamped GPS data with details about my average moving speed and  maximum speed during my short drive home. Both numbers were well within  the posted speed limits," says Katta. 
"The judge took a moment and  declared that I was not guilty, but he had an unusual statement that  followed. 
To avoid any misinterpretations about his ruling, he chose to  clarify his decision by citing the lack of evidence on the officer's  part. 
He mentioned that he was not familiar enough with GPS technology  to make a decision based on my evidence, but I can't help but imagine  that it was an important factor.""
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Wait there's more
http://skattertech.com/2011/02/how-my-smart-phone-got-me-out-of-a-speeding-ticket-in-traffic-court/
After a lengthy pause, the judge asked how I obtained the GPS tracking  information. I provided a detailed explanation about my new awesome  smart phone, the application in use, and how I exported the data. 
After  questioning whether the data was reliable, I mentioned the 
in progress  Sonoma County Superior Court trial regarding the same matter about the  credibility of both technologies.
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So there is a case in progress that will either allow police forces to continue to lie about their speed traps or arm citizens with their first ability to refute the speed traps.