The lock screen on your smartphone is an essential barrier to anyone looking to gain access to the device: It stops people from getting at your data, your social media accounts, your banking apps ...

Lock apps and files using a third-party app The easiest way to lock apps and files and use your fingerprint to access them is by using a third-party app.

This detailed guide with screenshots covers how to lock and hide apps on iPhone in iOS 18 for improved security and privacy.

Provide your most important files with the utmost security by learning how to lock a folder in your Windows PC and Mac.

For example, if you don't know how to unlock a protected folder, you'll be out of luck; Apple and third-party providers do not have this information. See also the best free password managers and ...

What it means to freeze a terminal window and lock a screen -- and how to manage these activities on your Linux system.

Part of TinkerTool System lets you muck about with file and folder permissions, including ACL (Access Control List) settings that include setting a folder to pass access to all nested items inside it.

A reader wants to know if there's a way to lock down a folder without installing third-party software. Here are some options, both with and without software.