Android Security provides an additional level of security features to Android applications and games made in Unity. It's goal is to prevent someone from re-compiling your APK with modified code, or at least make it more difficult for them.
Features:
• Check the application signature to see if the APK has been modified.
• Check if the user is running in development mode to try and modify your code.
• Verify that the APK was installed from the Google Play Store.
Documentation
If you have any questions, email me directly at jschieck@gmail.com and I'll get back to you ASAP.