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"This app requires root access and will only run on devices with Qualcomm chipset."
That's not "for android". That's playing a Qualcomm trick with the baseband.
I also wonder if a better way might be (but I'm speculating here) to use the measured distance from the nearest cell tower (called Timing Advance), as in http://stackoverflow.com/a/137... - and couple it with a public database of known celltowers locations to spot recent "additions".
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