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Ah @Donald.McLean I didn't even think to go into the response of the Department of Treasury. It would have been convenient for me if the Secret Service was still under the Treasury
So next to the hazardous material safety data sheets, we have to have the book that lists all the magic in use on site, it's effects, and safety measures.
So now we not only have the secret service with positioned snipers at public speakings, but now we have secret service arcane specialists maintaining wards and anti-magic zones.
@Noctrine ooh, there's the seed of a good question in that. What kinds of protections do you need to prevent magical counterfeiting of currency (in systems where magic allows for that)?
first you mark the dollar bill with your counterfeit checking marker. Then you hold it under the counterfeit UV light. Then you hold it under your magical scrying rune. Retail just gets more complicated.
Mostly, I wanted to take the too broad question and try to break it down a little into bite-sized chunks which might actually fit the Stack Exchange format. I don't know much about the subject myself, but I'll gladly admit that I'm curious.