>>1667474Import this and see if it works. It should when any of the set apps are opened pull up a pin entry window that blocks most of the screen. Some apps like the camera will still work but you can't really see what you are doing. On my phone pressing the back button will close the blocked app but the pin screen will still stay up. Pic related.
https://www.mediafire.com/?lx1eyv87y17lcpc 