Way to lock a project with a pin

Just wondering if you’ve ever considered adding the ability to lock a project with a pin. For example if you’re journaling and want to lock it.

Can you be a bit more specific? Do you mean you want to lock it so it can’t change? Or do you want to hide the content with a password? Or just pin it as a favorite in the side bar?

Mainly to lock it as in maybe a 4 digit pin to stop another person from looking at it.

I see. Yes, that is definitely something we want to add. Not possible yet, but high on the list.