WASHINGTON--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.
Mon Nov 22, 4:00 AM ET by Jason Tuohey, Medill News Service According to experts, several printer companies quietly encode the serial number and the manufacturing code of their color laser printers and color copiers on every document those machines produce. Governments, including the United States, already use the hidden markings to track counterfeiters. Peter Crean, a senior research fellow at Xerox, says his company's laser printers, copiers and multifunction workstations, such as its WorkCentre Pro series, put the "serial number of each machine coded in little yellow dots" in every printout. The millimeter-sized dots appear about every inch on a page, nestled within the printed words and margins. "It's a trail back to you, like a license plate," Crean says.
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Edited by KoanYorel, 23 November 2004 - 09:42 AM.
The only easy day was yesterday.
...some do, some don't; some will, some won't (WR)