| 摘要 |
An automatic teller system and a method of operating the system wherein the system can receive a personalized normal PIN or duress PIN from a user. If the user enters the duress PIN, the system determines that it is a duress PIN and actuates a silent alarm to notify authorities of the possible crime. The system will then simulate a normal transaction, perhaps with a reduced maximum withdrawal amount, so as to not alert a thief or potential thief that the alarm has been actuated, while dispensing bills marked with special ink that is visible only when viewed under special light. Also, the serial numbers of the bills dispensed under duress are recorded by the automatic teller system and automatically communicated to authorities. Under duress conditions, it is preferable that the monitoring of the ATM be enhanced.
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