You can password protect a folder in Windows 10 using a program called WinRar, which is free to download and use.

You can turn any Mac folder into a disk image to lock its contents behind a password. Here's how to password protect your ...

Security is easiest when you are the password: You don’t have to memorize complicated keywords, but simply hold your face up to the camera or your finger on a sensor — and you can access your computer ...