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How does an anti-passback​ system work? Please select the best answer.

It prevents an access card from being used to enter a zone again until it has exited that zone.

The access card is linked to the user.

It allows an access card to only enter those zones for which it is authorised.

Cards can only be used once within a time frame to enter a particular zone.


M5-T01-Site Layout and Access Security

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