The tracking dots aren't for anti-counterfeiting. The secret service has a separate chunk of code in every color printer that detects if you are printing money and prints out a page that says essentially, "you can't do that." (at least that was the case 20 years ago when I worked for HP).
The tracking dots are used by the FBI if someone prints out classified information and passes it around, or other copyrighted/illegal documents.
The EURion constellation[0] is how that detection mostly works as I understand it. Neat bit of tech. It's real obvious on euro bills once you know what to look for. Fun fact: not all printers give a hoot about this pattern, so it's a neat trick to annoy people with if your printer doesn't.
The tracking dots are used by the FBI if someone prints out classified information and passes it around, or other copyrighted/illegal documents.