If you lock a file in Notes, don’t lose your password

The Notes app, particularly paired with iCloud syncing, provides an easy way to jot down shopping lists, share information with other people, and record your private thoughts. But because some people might feel a little exposed by that, Apple lets you set a password for Notes on your devices and selectively lock notes for which you want extra protection. This password syncs across iCloud if you have Notes enabled in iCloud settings on your devices.

But set that password carefully!