Full Disclosure mailing list archives
Re: Government Uses Color Laser Printers to Track Documents.
From: Chris Umphress <umphress () gmail 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 consumers."
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 -- Chris Umphress <http://daga.dyndns.org/> _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Government Uses Color Laser Printers to Track Documents. Feher Tamas (Nov 23)
- Re: Government Uses Color Laser Printers to Track Documents. Chris Umphress (Nov 23)
- Re: Government Uses Color Laser Printers to Track Documents. bkfsec (Nov 24)
- Re: Government Uses Color Laser Printers to Track Documents. Brian Anderson (Nov 28)
- Re: Government Uses Color Laser Printers to Track Documents. Chris Umphress (Nov 23)