I tried to photo copy a dollar bill when I was a kid on a dinky inkjet printer. It printed half way then spit out something about counterfeit prevention. I scanned the bill, printed the top half, fed the paper back in, and printed the bottom half. This can only actually stop the completely unmotivated.
Do printers still do that? I wonder if the tracking dots are still there as well, haven’t used a printer in a while
You managed to defeat the first layer of defense - the warning. The yellow identifying dots were present on your printed copy, should you have decided become a precocious criminal successful enough to warrant the attention of the Secret Service.