Single passage enforcement is a Synergis™ Softwire feature that ensures that no more than one person can enter or exit an area per access grant, provided that the access to the area is controlled with a turnstile or a similar device that allows only one person through at a time.
Single passage enforcement requires Security Center 5.2 or later, and a Synergis™ unit running SMC 2.2 GA and later, or Synergis™ Softwire 10.0 GA and later.
To enforce single passage on doors controlled by a Mercury EP unit, you need Synergis™ Softwire 10.2 GA and later.
Benefits of single passage enforcementSingle passage enforcement can be used to improve the accuracy of people-counting and antipassback by effectively preventing tailgating, instead of just detecting it.
How this feature works (in general)When single passage is enforced on a perimeter door, the Synergis™ unit applies the following additional rules:
- When a cardholder presents their credential at the door and is granted access,
all subsequent credentials presented at the door reader are ignored for either a
period equivalent to the Standard grant time +
Entry time configured for the door, or until a
passage through the door is detected (whichever comes first).
If the cardholder is entitled to extended grant time, the reader shunting period is calculated as the Extended grant time + Entry time configured for the door.The Entry time is only taken into consideration if an entry sensor is configured for the door.
- When a cardholder presents their credential at the door and is denied access, the next cardholder that presents a valid credential is granted access without any delay.