What is the permission controller?
The Android permissions controller is a part of the Android operating system that tells apps what they can and can't access. When you install a new app, the Android permissions controller is what gives you the option to allow or deny permissions for that app.
What app permissions should I avoid?
Watch out for permissions like access to your location, camera, microphone, contacts, browsing history and photo library. These can be particularly invasive and risky if not explicitly required for an app to function.