Opener: wearOS without Smartphone

As a backup for a drained phone battery I would consider a wearOS smartwatch as an alternative for opening not only the apartment door, but also the front door of the house.
Is there a way to do the latter one without the need of the phone?
If there is no default way, any ideas for a workaround?

Please have a look to the coming Nuki Wear OS beta: Wear OS: Nuki Android App 2023.3.1 Beta.

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