RE: Blue Spike and Digital Watermarking with Giovanni

[Magroglou, Andrew (Aus) - N Ryde]

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:[EMAIL PROTECTED]]
Sent: Monday, January 17, 2000 8:20 AM
To: Eugene Leitl
Cc: [EMAIL PROTECTED]
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