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amarshall
1776 days ago
Could you elaborate?
2 comments
extropy
1776 days ago
I suppose GP is referring to
https://en.m.wikipedia.org/wiki/Machine_Identification_Code
And
https://en.m.wikipedia.org/wiki/EURion_constellation
link
sdan
1776 days ago
Printers recognize patters of stars on currency notes and will not print them and sometimes even notify the police.
link