You may have heard the term "Applock" before, but you probably don't know what it does. It is a tool that can protect your apps from unauthorized access. It works by locking the app with a PIN code or a pattern. If someone tries to open the app with the wrong credentials, they will not be able to access it. This protects your personal photos, videos, and other important information. 

How to use Applock

First, you need to install Applock. You can find it in Google Play. You will be asked to give it permission to use the usage access permission.