With thanks to MyLaowai for the heads-up:

We’ve known that our printers are spying on us, ever since the Electronic Frontier Foundation cracked the secret codes in the output of color laser printers. These hidden codes — apparently placed at the behest of the Secret Service — identify the serial number, make and model of the printer that printed them, as well as a date and timestamp.

What we didn’t know is that if you ask the manufacturer of your printer to stop spying on you, they respond by ratting you out to the Secret Service as a dangerous subversive, and a few days later, the SS will show up and ask you why you care about your privacy.

Click here for the full article.