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Every desktop printer leaves invisible signature on every printed document

Posted on Monday, October 25 2004 @ 18:23:37 CEST by

US scientists have discovered that every desktop printer has a signature style that it invisibly leaves on all the documents it produces.

They have now found a way to use this to identify individual laser printers.

The work will help track down printers used to make bogus bank notes, fake passports and other important papers.

Read more at BBC



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