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The trick is known to just about every two-bit crook in the cellular age: If you don't want the cops to know where you are, take the battery out of your cell phone when it's not in use.
Even when not in use, a cell phone sends a periodic signal indicating its location, enabling the worldwide cellular network to know where to look for it in case of an incoming call.
Those signals allowed police investigating Abu Omar's mysterious disappearance to ultimately construct an almost minute-by-minute record of his abduction, and to identify nearly two dozen people as his abductors.
CIA's bungled Italy job
Originally posted by smirkleyThe trick is known to just about every two-bit crook in the cellular age: If you don't want the cops to know where you are, take the battery out of your cell phone when it's not in use.
"... What was said is encrypted these days, and is impossible to crack..."
"...What if your conversation triggered of Echelon or something similar.
Meaning some keywords...started a process...call to be monitored..."
Originally posted by warriorwolfpr
I think we have gone true this before
People tracking is no longer just the stuff of covert military operations or spy movies. Putting mobile phones and GPS together is an ideal technological marriage, says an expert in the technology, Associate Professor Andrew Dempster of the University of NSW.
Originally posted by tek_604
The actual call cannot be monitored. While they do log the fact you made a call, and to what number (for your bill naturally!), what was said is encryted these days, and is impossible to crack.
I say impossible, meaning impossible through the use of "regular" technology - a couple of years ago, there was an attempt by either the US or UK Government(s) (I can't remember which, or if it was both), that the mobile phone companies use a less complex encryption routine, but the companies refused. I wouldn't like to say if governments are able to break the encryption now though. My guess would still be a no.