EFF’s List of Printers Which Do or Do Not Display Tracking Dots

“A “no” simply means that we couldn’t see yellow dots; it does not prove that there is no forensic watermarking present. (For example, the HP Color LaserJET 8500 series does not include any yellow tracking dots that we can see, but it may still include some kind of forensic marking, since the majority of other Color LaserJET models do.”