[6409] in cryptography@c2.net mail archive
RE: Blue Spike and Digital Watermarking with Giovanni
daemon@ATHENA.MIT.EDU (Magroglou, Andrew (Aus) - N Ryde)
Sun Jan 16 20:50:25 2000
Message-ID: <C01A75D28E2ED311BC8000A0C9A3BE718C578C@AUSNRY03-EXCHG.aus.xerox.com>
From: "Magroglou, Andrew (Aus) - N Ryde" <Andrew.Magroglou@aus.xerox.com>
To: "'bram'" <bram@gawth.com>, Eugene Leitl <eugene.leitl@lrz.uni-muenchen.de>
Cc: cryptography@c2.net
Date: Mon, 17 Jan 2000 11:16:10 +1100
MIME-Version: 1.0
Content-Type: text/plain;
charset="iso-8859-1"
Correct
Working for Xerox I can assure you that all of our colour machines together
with all our competitors colour machines leave a "trace".
I have seen this in action with respect to our Australian Federal Police
tracking down money printed on one of our machines.
Regards
AM
-----Original Message-----
From: bram [mailto:bram@gawth.com]
Sent: Monday, January 17, 2000 8:20 AM
To: Eugene Leitl
Cc: cryptography@c2.net
Subject: Re: Blue Spike and Digital Watermarking with Giovanni
On Sat, 15 Jan 2000, Eugene Leitl wrote:
> Joe Sixpack also doesn't believe that color laser copiers leave an
> unique signature on each copy, allowing you to trace the copy to an
> individual device. Nevertheless these are there, and can be evaluated
> if need arises. (Just try distributing a few xeroxed $100 bills, and
> time how long it takes until the feds knock on your door).
Do you have a reference for that?
[There have been SO many articles on this recently, including a long
thread on RISKS: the summary being that it is absolutely
true. --Perry]
-Bram
