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Autor: Juraj Bednar
Data:  
Para: System undo crew
Assunto: Re: [unSYSTEM] IMEI number on mobile phones
They use IMSI (sim number) to track you and you can not easily change that.

Changing just IMEI is waste of time.

I can turn off my phone at home and in the office, I have internet there (and if I need phone calls, I can redirect them to voip number).

It's scariest (and also most useful) when you are on the move. And that also makes it easy for identification, even if you find a way to change IMSI several times a day - probably less than 5. With just three time-location coordinates in a given day, you can correctly identify most of the population.

J.

On 9.5.2013, at 22:10, Vitalik Buterin <vbuterin@???> wrote:

> Hmm, would it be possible to change IMEIs even more rapidly, eg. once every 10min and/or every time the signal drops?
>
> Although then I suppoose you could get caught simply because lots of disappearing IMEIs would be located to your home address.
>
> On Thu, May 09, 2013 at 09:46:20PM +0200, Juraj Bednar wrote:
>> I have tried two IMSIs and they both run on the same network.
>> It all worked.
>>
>> So if you clone a sim card, it still works.
>>
>> But still - if one day of your movement is your fingerprint,
>> changing IMSI and IMEI is not worth the worry - it won't help.
>>
>> J.
>
>
>
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