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Anti-passback

User can establish an anti-passback group by adding multi-readers in a controller system. When a user presents card on a reader for two times, the door will open only in the first time. If user presents card on the two readers alternatively (in an anti-passback group), the can door will open every time.
Please note: One reader belongs to only one anti-passback group. If user selects "Yes" here, the reader will be deleted from original anti-passback group. If there is only one reader in an anti-passback group, the door may not be opened.
Acquire more anti-passback information
Why are there "*" behind property and property is bold type font?
The property is changed to a value which is different from last saved value.
Why is the saved button still forbidden after property changed?
Some property changes (For example: Letter input, time input) can be confirmed only after the property input focus is closed after the change. User can click property window space or other property to close input focus, or press "Enter" after input the change.
Why property is forbidden or hidden?
Property will be forbidden in following situations:
1. The property owner is considered as non-changeable by system. For example: "No Holiday" property in holiday schedule can not be changed.
2. The property is used for display instead of for setup.
3. This property is regarded as meaningless or assigned to a certain value because of other properties
4. When setup multi-owners, one or more than one owners’ property is meaningless or assigned as a certain value.
Property will be hidden in following situations;
1. Invalid owner is selected.
2. The property is forbidden in non-expert mode. To change the mode, click main menu "Platform" -> "Expert Mode".
3. Other properties value leads to meaningless of this property.
4. When setup multi-owners, one or more than one owners’ property is meaningless.
Why property value displays multiple value and can not be displayed?
When select multi-owners, different owners may have different values for the same property.