Governments, including the United States, already use the hidden markings to track counterfeiters." According to the article, the high fidelity of outputs from color machines to their original documents suggests that counterfeiters can potentially succeed in creating high-quality counterfeited currency and government documents using these machines. "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. 22, 2004, PC World published an article stating that
Please note that EFF is no longer requesting or accepting samples of printer dots.
Please visit for the most up-to-date information on this project. Note: As of October 13th, 2005, some information in this paper
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