If you've set a password or Touch ID/Face ID lock on your Notes app, you can access your locked notes using Face ID on your iPhone. Simply open the Notes app on your iPhone and tap on the locked note you wish to access. When prompted for authentication, simply look at your iPhone screen and Face ID will attempt to identify you. If your identity is verified, the note will be unlocked and you can access the contents of the note. If Face ID fails to identify you, you can enter the password set for the note or repeat the Face ID authentication process. It's a secure and convenient way to protect your sensitive information on your iPhone.