3 ms·
Very tangentially related: did you know that photocopiers recognize a particular pattern of circles to detect if someone attempts to copy a banknote? https://e
by _Microft 5y ago
Very tangentially related: did you know that photocopiers recognize a particular pattern of circles to detect if someone attempts to copy a banknote?
https://en.wikipedia.org/wiki/EURion_constellation https://en.wikipedia.org/wiki/EURion_constellation