Is Your Printer Spying on You?

Most modern color printers embed nearly invisible, faint yellow "forensic tracking dots" on every page printed. These dots can be used to determine the make, model, and serial number of the printer that printed the page along with the date and time it was printed. While this secret tracking method has advantageous for law enforcement tracking down threatening letters or illegal content, it also poses serious risks to whistle blowers, activist and journalists in authoritarian regimes.