Tailgating
Tailgating is when more people enter or exit through a controlled door than those who were authorized to do so. It often happens when someone follows closely behind an authorized user after a valid unlock, slipping in without presenting credentials. Sometimes, tailgating is intentional, but it can also happen accidentally when users hold the door open for others.
How tailgating detection works
In Kisi, tailgating detection uses integrated cameras with built-in AI analytics to track how many people cross the doorway after each unlock. The camera continuously monitors the entrance, recognizes movement, and determines whether people are entering or leaving.
When the system sees that more people have crossed in the same direction than there were unlocks during a short time window, Kisi identifies the event as tailgating. If one person enters and another leaves, it isn’t considered tailgating, since both directions are accounted for separately.
The result is a Tailgating event in your Kisi dashboard that links the door unlock, the detected line crossings, and the video clip showing exactly what happened.
How it works in Kisi
- A door unlocks through a valid credential, remote command, or schedule.
- An observation window begins for the door.
- The connected camera tracks people crossing the doorway line and their direction.
- Each new unlock or lock event resets the observation window.
- If multiple crossings occur in the same direction after one unlock, a Tailgating event is created.
- Kisi links the new Tailgating event to the original unlock for full context.
- The event appears in Event history with a video preview.
Supported systems
Tailgating detection in Kisi is powered by integrations with intelligent video platforms. These systems provide the AI-based person detection and line-crossing capabilities required to identify multiple entries through a single unlock event.