You are, we hope, already protecting your phone with a PIN, a fingerprint, or a face (or all three), but sometimes you'll want to add an extra barrier to particular apps—if you're lending your phone ...

Easily protect your Apple Notes with a passcode or Face ID; locked notes show a padlock, so your private info stays hidden ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

Garmin watches can lock with a passcode, but this feature isn't on by default. Read on to find out how to turn this feature on, so you can lock your data when your watch isn’t on your wrist. Passcodes ...