How do serial numbers, printed on banknotes, help make them hard to copy? Drag and drop the right answer to the yellow spot
{"8.80221_39.931":[{"id":41423903,"answer":"criminals do not know numbers","x":8.80221,"y":39.931},{"id":41423904,"answer":"the serial number helps track the note","x":8.80221,"y":39.931},{"id":41423905,"answer":"the issuer looks smart","x":8.80221,"y":39.931},{"id":41423906,"answer":"it's one extra thing to copy","x":8.80221,"y":39.931}]}
Ziehe die Antwort zum richtigen orangen Punkt.
criminals do not know numbers
criminals do not know numbers
the serial number helps track the note
the serial number helps track the note
the issuer looks smart
the issuer looks smart
it's one extra thing to copy
it's one extra thing to copy
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