Quick answer
An eligible Apple Notes item protected through the account’s supported device-passcode or custom-password locking method.
Limitation
Custom password recovery and compatible-device requirements matter. Resetting a forgotten password does not unlock all older notes protected by it.
Related terms
Questions
What does Locked note mean?
An eligible Apple Notes item protected through the account’s supported device-passcode or custom-password locking method.
What limitation matters?
Custom password recovery and compatible-device requirements matter. Resetting a forgotten password does not unlock all older notes protected by it.