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nevertheless, I can hit my local CVS and pay with my $100. They will just check the security strip. Easy peasy.


This is a key point. Detection by human is fairly limited as they only use their own, easily fooled, eyes and a detection pen, which can be fooled if starch-free paper was used by the counterfeiter [1]

[1] https://en.wikipedia.org/wiki/Counterfeit_banknote_detection...


I think the point was that these bills have said security strip.


Which was the GP's point as well.




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