I have an outer fence (to my yard) that I can open through homekit, I would like to be able to trigger that with auto unlock from Nuki. So when I am approaching home, auto unlock unlocks my Nuki and triggers the fence opening through homekit.
@Fede_Fede You can do this with IFTTT without any connection to NUKI at all. In IFTTT you may create your own applet that reacts on your GPS location (enter/leave a specified area) and unlocks your fence - assuming you fence smarthome thingy has an IFTTT implementation. No matter what you may have setup in your Nuki AutoUnlock feature.
The request is to expose the door sensor as a sensor in HomeKit which allows one to use that as a trigger for other actions (turning on lights etc). So, no, this is not already supported. If it was supported the door opener would be able to appear as its own tile in the Home app.
I see there is a duplicate thread in English with same request and further votes.