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Intelligent banknote neutralisation systems

Intelligent banknote neutralisation systems (IBNS) are security systems which render banknotes unusable by marking them permanently as stolen with a degradation agent. Marked (stained) banknotes cannot be brought back into circulation easily and can be linked to the crime scene. Today's most used degradation agent is a special security ink which cannot be removed from the banknote easily and not without destroying the banknote itself, but other agents also exist. Today IBNSs are used to protect banknotes in automated teller machines, retail machines, and during cash-in-transit operations.