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A comment on Novel Optical Trick Creates Ultra-Secure Cash. Parent comment
Is it the security measures, or does the (relatively) small number of places where one can pass Australian currency result in fewer attempts?
US currency is somewhat familiar in a large number of countries, so there are lots of opportunities to get someone to take counterfeits.
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Is it the security measures, or does the (relatively) small number of places where one can pass Australian currency result in fewer attempts?
US currency is somewhat familiar in a large number of countries, so there are lots of opportunities to get someone to take counterfeits.