How to handle users without permission to access an app

1. How do I allow users to access a program?
2. Can Android app bypass permissions?
3. Are apps with no permissions safe?

How do I allow users to access a program?

Select Start > Settings > Privacy & security. Select an App permission (for example, Location) then choose which apps can access it.

Can Android app bypass permissions?

Android permissions are based on UNIX permission model, but the catch here is there exists certain APIs provided by the Android Platform itself which allows us to communicate with each other bypassing the android permission model.

Are apps with no permissions safe?

Therefore running a malicious app without any permission on an Android device can end up in a permanent device infection if the device is vulnerable to an exploit that allows the app to get root permissions. Those exploits can work independently if your device is rooted or not, then work even on stock rom devices.