Zeljka Zorz, Managing EditorJune 27, 2018
Researchers release app that masks printers’ tracking dots
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Did you know that nearly all modern color laser printers put tracking patterns of tiny yellow dots on each piece of paper they print?
Most printer manufacturers include these yellow dot patterns, which reveal information such as the serial number of the printer and the date and time when the document was printed. They are effectively invisible to the naked eye and they are ostensibly used to identify suspects in criminal counterfeit investigations.
But they can also be used to track down political dissenters or leakers.
Prease to read more here:
(Before anyone askes, ink-jets do the same kind of things, and this has been going on for a long time)
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