title: Modifying an android app with integrated google maps
body: <p>I found a free android app on Google Play that uses google maps and communicates with the author's website. I modified it with text editor, packed back into an .apk file and signed it with free signing tools found on the web and installed successfully onto my phone. It works great but it cannot show google maps anymore.
  My questions:</p>
  
  <ol>
  <li>Is it illegal to modify an android app and use it personally on my phone?</li>
  <li>Can Google detect that the app is trying to access gmaps with a different signature and can I get punished or will Google inform the author?</li>
  <li>Can I get a signing key and register it on gmaps and can I use it to sign the app to enable gmaps inside the app?</li>
  <li>Will google detect that the same app is using their gmap services with different signature?</li>
  <li>Can I cause problems to author with this modification?</li>
  </ol>
  
  <p>Thank you in advance,
  Andrysh5</p>