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    ?? Humpleupagus ?? (humpleupagus@eveningzoo.club)'s status on Tuesday, 04-Feb-2025 22:03:37 JST?? Humpleupagus ???? Humpleupagus ??
    in reply to
    • MMS21 :blobcatkirby:
    • Titanbreaker-kun
    • Peter
    • Hyperhidrosis
    • mullvad
    The printer tracking dots are real. They can doxx you.
    https://en.m.wikipedia.org/wiki/Printer_tracking_dots
    In conversation3 months ago from eveningzoo.clubpermalink

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      Printer tracking dots
      Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was used to print the document. Developed by Xerox and Canon in the mid-1980s, the existence of these tracking codes became public only in 2004. History In the mid-1980s, Xerox pioneered an encoding mechanism for a unique number represented by tiny dots spread over the entire print area, and first deployed this scheme in its DocuColor line of printers. Xerox developed this surreptitious tracking code "to assuage fears that their color copiers could be used to counterfeit bills" and received U.S. Patent No. 5515451 describing the use of the yellow dots to identify the source of a copied or printed document. The scheme was then widely deployed in other printers, including those made by other manufacturers. The public first became aware of the tracking scheme in October...
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