I've found an "iBeacon detection" option in notification settings. What is iBeacon? Am I right there could be some small device which can be paired with the lock to auto-unlock? Is it available for sale? I would want something like this for my kid.
Tedee Bridge broadcast the iBeacon signal to inform mobile phone that it is near the lock and may try to start auto-unlock. So the beacon is only a trigger for mobile auto-unlock feature.