CNN.com - WiFi activists on free Web crusade

[Steve Schear]

At 11:34 AM 12/3/2002 -0800, you wrote:
>At 12:54 PM 12/3/02 -0500, Sunder wrote:
> >To fix this, change your MAC address (or whatever WiFi uses for that),
> >randomly every time you move around, and don't share things that can
> >identify your machine.  i.e don't run things such as SMTP, FTP,
>Microsoft
> >File sharing which give away your host name, and don't accept cookies
>from
> >web sites that can track you, and make sure your browser doesn't leak
>your
> >email address, and be aware that anything you do can be sniffed.
>
>Hope that identifying 802.11 transmitters from their analog artifactual
>properties [1] is more
>difficult than identifying a Morse Coder's fist.

The technology to identify transmitters from the "keying" characteristics 
of the transmitter was commercially made available by Corsair 
Communications http://www.corsair.com/ (now merged with Lightbridge) using 
PhonePrint technology licensed from TRW's Avionics & Surveillance 
Group.  They claim it was successful in preventing over 250 million 
fraudulent cloned handset call. It appears PhonePrint is no longer being 
actively marketed by Lightbridge.

steve