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Old 09-14-2011, 08:47 PM   #6
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Join Date: Apr 2003
Location: T.Dot / FL
Posts: 9,779
Yup i used my iPhone 4 and Harry's GPS lap timer available from the app store. Since the GPS signal wasn't too great, the speed and GPS aren't accurate, you can buy a gps add on for better signal, but it's still pretty kool.
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