Hello! I would find it cool to be able to lock a Lovelace, a page, or an entity with a password. An example would be, for example, on a wall panel so that children cannot open the garage.
Thank you
Charly
On a card-level there is this already: iantrich/restriction-card: 
Apply restrictions to Lovelace cards (github.com)
Wow nice. Thank you I didn’t saw that one.
I actually use it to prevent accidental switching (e.g. powerplugs) … the pop-up message just shows me the code so I do not have to remember it 