Warning (Added 2015) Some of the documents that we previously received through FOIA suggested that all major manufacturers of color laser printers entered a secret agreement with governments to ensure that the output of those printers is forensically traceable. Although we still don't know if this.....
It has a link to the App that decodes, what being embedded in the print and anonymize the prints, by scrambling the yellow dot patterns.
https://dfd.inf.tu-dresden.de/