For anyone who might have issues with the NFC reader there is one important thing to know:
The location of the NFC reader seems to be under the camera (at the zeiss branding).
I had problems getting the NFC to read my NFC chip (yubikey) until I held it close to the camera at about 45 degree angle. Doing this solved it.
Hopefully this is helpful to others.
Yep "under" the camera, I don't know the exact location, but that is where to reception is best. Makes sense, as it is pretty much to only part not covered by the one-piece aluminum body.