November 22, 2004

Aren’t Color Laser Printers Amazing? [7:41 pm]

Related to the discussions about the limitations engineered into graphic editing software: Government Uses Color Laser Printer Technology to Track Documents [pdf] (see also related Extrinsic Signatures Embedding Using Exposure Modulation for Information Hiding and Secure Printing in Electrophotography, via PCWorld)

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.

Slashdot: Color Laser Printers Tracking Everything You Print

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