I imagine there are ways and means of obfuscating / anonymizing the dots such as blocking the printer from emitting them (e.g. an empty yellow cartridge that the printer perceives as full), modifying the firmware, using a burner printer, or using a mono laser jet.

As a side issue, most modern bank notes have a bunch of yellow circles integrated into the design on each side. They look random but they're in a recognisable pattern called a constellation that enables devices like copiers / scanners to recognize when people are trying to copy money or other financial instruments like checks.

[–] Plasma@lemmy.ml 5 points 8 months ago (1 children)

The link you sent has a period at the end so it doesn't work when clicked.

[–] Motorheadbanger@lemmy.world 20 points 8 months ago

It's a tracking dot

[–] psud@aussie.zone 1 points 7 months ago

The correct link: https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dots