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[liberationtech] If we want to be anonymous in #azerbaijan we take batteries out of our cellphones

Parker Higgins parker at eff.org
Mon Jun 18 11:55:49 PDT 2012


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On 6/18/12 11:44 AM, Bernard Tyers - ei8fdb wrote:
> The "still being tracked with no battery in my phone" story sounds 
> like a hoax to me.

Yeah, I wouldn't want my answer to be interpreted as providing
evidence for it. I'm not advocating breaking any laws in this forum,
but especially not laws of physics.

> As Eleanor said, if there is no power source attached to
> telephone, or to whatever secondary tracking device installed in
> the telephone, then it is not possible to track someone. No power
> source, no radio frequencies being created, no transmissions of
> information.

Right. On a specific device, you could imagine a secondary battery
powering the tracking device (er, the radio) but it's hard to imagine
a scenario where that's the easiest way to track somebody.

The conversation I had with the security researcher was actually about
a related question, and that's whether "airplane mode" could be
trusted as well. Again, I don't want my acknowledging a theoretical
possibility to be taken as advocating a hoax or anything, but the
agreement was that SOFTWARE solutions like airplane mode can't really
be trusted, and some processor components do not have open-source
software options. Of course, on a current iPhone, there isn't an
option to remove the battery.

Hope that clears things up a bit!

Thanks,
Parker

- -- 
Parker Higgins
Activist
Electronic Frontier Foundation
https://eff.org
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