Knowledge Base: What is Anti-Passback?

Anti-passback system is a feature of access control system that prevents an authorized user to go in more than once, (or go out more than once) of a security controlled area. As a rule, a corresponding “IN” must have a matching “OUT” from the system. However, an access control system equipped with anti-passback must check the door if it was opened after authentication, otherwise, the record must be deleted automatically

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