Actually, only a couple of months before I joined.

It doesn't only match a document to a printer -- manufacturers can match the printer to a person or company.

Xerox and the government have a good relationship. "The U.S. government had been on board all along--they would actually come out to our labs"
The secret collusion is the scary part. I am not afraid of having documents traced back to me. It just bothers me that they can be without my knowing it.

Its spyware for printers. Even if its more or less harmless I don't want it there.

What about this : In the name of curbing kiddie porn, all digital images will be encoded with the serial number of the camera that took them -- but you won't be told that when you buy the camera. Is it such a big step ?