This post will show you how to lock a file or folder in Windows 11/10. You can use the built-in method to encrypt folders or third-party apps.

Users can take advantage of the cryptographic protection offered by GPG to secure files and data that they want to keep well under wraps.

In Word, Excel, or PowerPoint for Windows, open the file you want to protect with a password, then select File and Info. You should see a Protect option at the top of the next list: Click this ...

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.

With iOS 18, Apple now offers the ability to lock and hide certain apps on your device. Whenever you want to access the app, you have to input a passcode or biometric authentication to open it.