Images: EFF cracks printer tracking code

Images: EFF cracks printer tracking code

Summary: It was recently discovered that many printers put a code on every document it prints. Now we know what it says.

TOPICS: Hardware

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  • show through

    The ink for the code will show through print.

  • enhancing the dots

    This computer graphics overlay is not to scale but it allows easier analysis of the pattern.

  • connecting the dots

    Here's what the dots reveal: the date, time and printer's serial number on every printed page.

Topic: Hardware

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  • RE: Images: EFF cracks printer tracking code

    I think this is a good idea. Makes ransom notes etc. easier to trace.