1,546 votesGranoblasticMan commented
I like to keep my notes very organized, and I feel this feature would help a LOT.
It’s still on our todo list to support this directly, but I wanted to mention that it’s currently possible to password protect a note in a roundabout way: by importing a password protected PDF into the note. This will password protect the note with the password of the PDF. You can even delete the PDF from the note and the password will remain on the note.