Do you know where your printout has been?

I'm all in favor of stopping counterfeiting, but the fact that manufacturers have been putting this in printers for years without telling anyone is a little bit frightening in my book. According to the article from PCWorld.com - Government Uses Color Laser Printer Technology to Track Documents, we pretty much relying on the practices (not the policies) of the government to make sure that the information is used responsibly.

How long before some sort of hacker-type person figures out a way to decode the printout and find out where a document came from? (Or, at least, if two documents came from the same or different printers...)