Re: [Full-Disclosure] Government Uses Color Laser Printers to Track Documents.
From: Chris Umphress (umphress_at_gmail.com)
To: Feher Tamas <firstname.lastname@example.org>, Full-disclosure <email@example.com> Date: Tue, 23 Nov 2004 17:09:38 -0800
> Next time you make a printout from your color laser printer,
> shine an LED flashlight beam on it and examine it closely
> with a magnifying glass. You might be able to see the small,
> scattered yellow dots printed there that could be used to
> trace the document back to you.
So they're using my yellow toner and expecting me to be happy about
it? Is it tax deductable? ;)
> Lorelei Pagano, a counterfeiting specialist with the U.S.
> Secret Service, stresses that the government uses the
> embedded serial numbers only when alerted to a forgery. "The
> only time any information is gained from these documents is
> purely in [the case of] a criminal act," she says.
This is like the semi-recent OnStar issue, right?
> John Morris, a lawyer for The Center for Democracy and
> Technology , says, "That type of assurance doesn't really
> assure me at all, unless there's some type of statute." He
> adds, "At a bare minimum, there needs to be a notice to
Absolutely. A "you're being tracked, have a good day" would be nice.
> Crean describes the device as a chip located "way in the
> machine, right near the laser" that embeds the dots when the
> document "is about 20 billionths of a second" from printing.
> "Standard mischief won't get you around it," Crean adds.
I have to wonder how long it will take modding sites to pick this up.
> Neither Crean nor Pagano has an estimate of how many laser
> printers, copiers, and multifunction devices track
> documents, but they say that the practice is commonplace
> among major printer companies.
This sounds a lot like "But everyone does it!" That never worked for me.
> Unlike ink jet printers, laser printers, fax machines, and
> copiers fire a laser through a mirror and series of lenses
> to embed the document or image on a page. Such devices range
> from a little over $100 to more than $1000, and are designed
> for both home and office.
Black-only laser printers are down as low as $100. Color is still
$500+, just clearifying.
> Crean says Xerox pioneered this technology about 20 years
> ago, to assuage fears that their color copiers could easily
> be used to counterfeit bills.
It can be done with inkjet printers now.
Anyhow, my $0.02. I probably won't be buying a new (or old) color
laser printer in the near future.
-- Chris Umphress <http://daga.dyndns.org/> _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html