ProFace X [TD]
User Manual
P a g e
| 65
Copyright©2020 ZKTECO CO., LTD. All rights reserved.
Anti-passback Setup
9.5
It is possible that users may be followed by some persons to enter the door without verification, resulting
in security problem. So, to avoid this situation, Anti-Passback option is developed. Once it is enabled, the
check-in record must match with check- out record so as to open the door.
This function requires two devices to work together: one is installed inside the door (master device), the
other one is installed outside the door (slave device). The two devices communicate via Wiegand signal.
The Wiegand format and Output type (User ID / Badge Number) adopted by the master device and slave
device must be consistent.
Click
Anti-passback Setup
on the Access Control interface.
Item
Description
Anti-passback
direction
No Anti-passback:
Anti-passback function is disabled, which means
successful verification through either master device or slave device can unlock
the door. Attendance state is not saved.
Out Anti-passback:
After a user checks out, only if the last record is a check-in
record, the user can check out again; otherwise, the alarm will be triggered.
However, the user can check in freely.
In Anti-passback:
After a user checks in, only if the last record is a check-out
record, the user can check in again; otherwise, the alarm will be triggered.
However, the user can check out freely.
In/Out Anti-passsback:
After a user checks in/out, only if the last record is a
check-out record, the user can check in again; or a check-in record, the user
