iOS Companion app - Create Pass with passkit

It would be great if we could integrate passkit with the ios companion app so that we are able to create custom passes eg. Front Door pass that can be read on an NFC reader. This would allow me to just use my phone to enable and disable the alarm by holding it against the tag reader (but keeping it secure with 2FA - Face ID). At the moment when you hold the iPhone against a reader it has different random generated tag ids each scan, I think if you create a pass the tag id is the same {not sure tho}?.