Cyntexfones : How to password-protect the iPhone Notes app in iOS 9.3

Image: Brittany Herbert/Mashable

Apple pushed out its iOS 9.3 update Monday, the release that brings the long-awaited "Night Shift" feature to iPhones and iPads. But other iOS features are getting some much-needed attention, too.
Notes, an often overlooked app, also has a handy new trick: the ability to password-protect individual notes.

While adding a password to your daily to-do list might seem unnecessary, there may be some notes you don't want anyone who picks up your device to be able to see. While it's never a good idea to store sensitive personal information — like account numbers or passwords — in an easily accessible place (we recommend using a password manager, like LastPass or 1Password), adding an extra layer of security to your day-to-day notes is definitely a useful feature.
Now, adding a password to your notes is easy, though there a couple important points to keep in mind.
You can add a password to any new or existing note in the Notes app from the share menu by selecting "Add Password." If it's the first time you've used this feature, you'll be prompted to create a new, unique password on the next screen.

This password will apply to all the notes you protect, not just this one. Additionally, the password should be different from the one you use with your Apple ID (you can add a hint to help you remember) and you can also choose to enable Touch ID for added security.
You can see which notes are protected by the lock icon that appears under the note's heading. Once you've set a password, notes will still appear "unlocked" until you close the app or restart your device. It's important to remember, however, that the first line of the note will always appear — even when the note is "locked" — so you may want to avoid putting any sensitive information at the top of a note.