[IP] Privacy worries? Don't print in color
Begin forwarded message:
From: Lauren Weinstein <lauren@xxxxxxxxxx>
Date: October 25, 2005 11:38:59 AM EDT
To: dave@xxxxxxxxxx
Cc: lauren@xxxxxxxxxx
Subject: Re: [IP] Privacy worries? Don't print in color
Dave,
It's also worth noting that it is technically possible to encode
similar information in black and white digital prints (or copies) as
well, using other steganographic encoding techniques.
Just for the record, as at least one media outlet noted last week,
I actually reported about coding in color copies in my
PRIVACY Forum all the way back in 1999 -- after getting a Xerox
technical product manager to finally admit to me that it was going on:
( http://www.vortex.com/privacy/priv.08.18 ,
http://www.vortex.com/privacy/priv.08.19 ).
At the time, I suggested that these issues needed to be discussed
widely, but of course nobody really seemed to care. In fact, many
people simply refused to believe that the whole issue was even real.
--Lauren--
Lauren Weinstein
lauren@xxxxxxxx or lauren@xxxxxxxxxx or lauren@xxxxxxxx
Tel: +1 (818) 225-2800
http://www.pfir.org/lauren
Co-Founder, PFIR
- People For Internet Responsibility - http://www.pfir.org
Co-Founder, EEPI
- Electronic Entertainment Policy Initiative - http://www.eepi.org
Moderator, PRIVACY Forum - http://www.vortex.com
Member, ACM Committee on Computers and Public Policy
Lauren's Blog: http://lauren.vortex.com
DayThink: http://daythink.vortex.com
- - -
From: Monty Solomon <monty@xxxxxxxxxx>
Date: October 25, 2005 3:22:01 AM EDT
To: undisclosed-recipient:;
Subject: Privacy worries? Don't print in color
Privacy worries? Don't print in color
By Hiawatha Bray | October 24, 2005
You've got to love black-and-white laser printers. You can get a good
one for $150 or so, and each toner cartridge cranks out thousands of
pages before you need a refill. Best of all, they don't spy on you.
You can't say the same about color laser printers, as we learned last
week. Actually, we should have learned it nearly a year ago. That's
when PC World magazine reported that makers of color laser printers,
in cooperation with law enforcement agencies, have programmed their
machines to print tiny yellow dots on every printed document. These
dots are almost invisible under normal conditions, but can be spotted
by anyone with a magnifier and the right sort of lighting.
...
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