Carriers have also sold customer location data, no search warrant required. Though we can rest assured that the FCC has slapped the carriers' wrists with the utmost seriousness.
replyAnd sold it to not just the government but anybody _claiming_ to be a bounty hunter (and some other professions).
replyI think that's very much what is discussed in this whole thread.
replyCouldn't you just maintain a list of cell tower IPs and figure it out with traceroute?
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