Turn on the app if you feel unsafe and hold your finger on the screen. Once you’ve arrived at a safe location, enter your code. If your finger leaves the screen without entering the code, law enforcement is notified and your location is traced through the phone. So great for college girls!!
How to lock iPAD or iPhone Screen, so Children Stay within the App You Want Them to? - No More Accidental App Deletion or Unwanted App Re-arrangement!