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Location tracking of phones is out of control. Here’s how to fight back.
(arstechnica.com)
This is a most excellent place for technology news and articles.
Can't they just triangulate you from cell towers?
Take the battery out I guess?
Yup, but that would require more effort (I.e. interacting w/ network operator). Tracking someone by Bluetooth can be done passively, as evidenced by services like "Find my Droid" or "Find my iPhone" or whatever.
Blocking my cell radios eliminates the entire point of the phone for me, so the tradeoff is too steep. That said, airplane mode is right over there if you need it temporarily.
What phone do you have, one of these?