The anti-tailgating feature is supported from the BioStar 2.7.8 and the latest firmware of Suprema devices. To use this feature, you need to upgrade both BioStar 2 and device firmwares to the versions listed below or above.
When you match both BioStar 2 server and device firmware version, you can configure anti-tailgating feature in 'Door' and 'Device'.
In the door configuration page, you can see the anti-tailgating feature as below.
You can configure anti-tailgating as an exit button or a door sensor.
With the supporting firmware version, you can configure the Trigger & Action for devices with the anti-tailgating feature.