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GPS signals are everywhere, so the only thing you could intercept would be the outgoing transponder signal. This could be masked as almost anything.... random cell phone packets, radio waves with local pickup, etc. Hell, they could even just manually retrieve the data once in a while when your car is parked outside your house.

So it might be hard to execute, but certainly still a good idea. I just wanted to point out that GPS logging is entirely passive; only the transmission can be detected.




>I just wanted to point out that GPS logging is entirely passive

This is not entirely true, for example: http://en.wikipedia.org/wiki/Radar_detector_detector

It appears that many, if not all GPS devices use superheterodyne receiver as well.




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