Pre-2000 while I was working in hydraulics we had a customer who made truck sized scanning devices for governments/airports/military.
The owner of our company visited them to drop some stuff off, and got a short tour of their shop including a smaller xray backscatter scanner.
It was clear enough to read magazine covers inside a briefcase. And that was their old prototype machine.
Another 24+ years of work on that could probably do a lot more.
One archaeology outfit has read text that was written on metal foil that was too fragile to unwrap.
A card pack would be pretty easy.
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