[2022] in cryptography@c2.net mail archive
Re: Mobile phones used as trackers
daemon@ATHENA.MIT.EDU (Ben Laurie)
Tue Dec 30 18:35:34 1997
Date: Tue, 30 Dec 1997 23:26:20 +0000
From: Ben Laurie <ben@algroup.co.uk>
To: Phil Karn <karn@qualcomm.com>
CC: davidw@datamgmt.com, cryptography@c2.net, perry@piermont.com
Phil Karn wrote:
> The only countermeasure I can think of against registration tracking
> is to keep your cell phone turned off anywhere you don't want the
> world to know you've visited.
Actually, you need to take the batteries out. My previous mobile (a
Nokia 2100) audibly interfered with land lines (or perhaps my headset),
and I have caught it registering itself when it is nominally off. I
haven't noticed my current phone (a StarTAC [which I would happily
exchange for a very light 2100]) doing it, but I haven't checked...
Cheers,
Ben.
--
Ben Laurie |Phone: +44 (181) 735 0686|Apache Group member
Freelance Consultant |Fax: +44 (181) 735 0689|http://www.apache.org
and Technical Director|Email: ben@algroup.co.uk |Apache-SSL author
A.L. Digital Ltd, |http://www.algroup.co.uk/Apache-SSL
London, England. |"Apache: TDG" http://www.ora.com/catalog/apache
