Use case or problem
There should be an option to password protect local vaults. Currently this option only exists for publishing or syncing. However, some of the data I enter in my local vaults is confidential and sensitive and sometimes my laptop can be used by other family members as well. If they click on the Obsidian app, it instantly provides them access to all the notes which can be problematic and the data can be easily compromised.
Proposed solution
I would propose adding a feature which lets you enter a password to then access your local vaults instead of instantly opening up the notes.