cell phone anonymity

[Lucky Green]

GSM phones do indeed broadcast their International Mobile Equipment Number
(IMEI). The IMIE is hardcoded into the firmware of each phone. Changing the
IMIE is possible, but not from the UI. Recently, the manufacturers have
announced that they will make it even more difficult to alter IMEI's in the
future.

--Lucky Green <shamrock at cypherpunks.to>

  "Anytime you decrypt... its against the law".
   Jack Valenti, President, Motion Picture Association of America in
   a sworn deposition, 2000-06-06


> -----Original Message-----
> From: cypherpunks at openpgp.net [mailto:cypherpunks at openpgp.net]On Behalf
> Of Mats O. Bergstrom
> Sent: Sunday, January 07, 2001 14:53
> To: Multiple recipients of list
> Subject: Re: cell phone anonymity
>
>
> At 10:06 2001-01-07 -0800, montag montag wrote:
> >Please post the actual experiences about obtaining a
> >pre-paid cell phone
>
> GSM/Europe
> 1) Buy a cell phone and pay cash
> 2) Buy a GSM cash-card and pay cash
> 3) Don4t send in the registration form to get that extra half hour!  :-)
>
> To stall traffic analysis - buy many GSM cash-cards and change
> frequently - they are only around USD 10 (not counting the prepaid
> calling time). I don't believe the cell phone is sending it's serial
> number (but who - except for deep insiders and possibly Lucky Green -
> knows for sure?).
>
> //Mob
>
>
>