Use case or problem
The problem is security, it would be nice to be able to secure a vault using face id or fingerprint in order to secure our vault if something ever happened such as a device getting stolen. Or this has the added benefit of feeling better about writing personal things in your vault because you can keep it a lot more private.
Right before your workspace loads, you should be prompted to enter a pin/fingerprint/face-id to unlock and enter your vault.
This should be a setting that can be turned on and off.
This should be able to be done on mobile and desktop
Current workaround is to use the day one app for writing private things