I'm not into counterfeiting. There was a debate.., so I decided to go deeper with curiosity.
EURion constellation is a pattern incorporated into banknotes. So photocopiers and printers if they obey the rule will not copy/print your banknote.
My question: if you buy, for example, a modern Xerox photocopiers it will refuse to copy the banknote with Eurion constellation. Can a hacker modify the firmware the photocopier to disable this feature?