For purely cost reasons I've always used black and white laser printers. I'm particularly a fan of ML-2851ND for being cheap and easy to refill. It's my go to work horse. I'm wondering how people track these though.
I've seen yellow dots on color printers. The EFF says this,
safest to assume that all modern color laser printers
What about the black and white ones? Has anyone determine any similar method on these? Is there a similar database that covers the monochrome laser printers?
It has been reported that monochrome printers and copiers from major manufacturers also include the markings.[by whom?]