Folks who don't like to be surveilled: This is a friendly reminder to avoid color printers made by #Brother, #Canon, #Dell, #Epson, #HP, #IBM, #Minolta, #Kyocera, #Lexmark, #Panasonic, #Ricoh, #Sharp, #Toshiba, & #Xerox https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dots #trackerdots
List of Printers Which Do or Do Not Display Tracking Dots

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...

Electronic Frontier Foundation
And for good measure, be sure to use #DEDA: https://github.com/dfd-tud/deda
GitHub - dfd-tud/deda

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GitHub
@resist1984
For my curiosity do you know of any laser printers that work well with Linux (no binary blobs) and are guaranteed to not have tracker dots?
@crazydeepgrowth AFAIK, no printer maker guarantees their printers not to have tracker dots (regardless of OS). A few admit to having tracker dots, and a vast majority were caught producing tracker dots. I've not heard of any monotone printers that have tracker dots. Most printer makers have lots of ethical issues, but the lesser of evils seems to be Oki. I would consider a b&w Oki laser.