Lock other apps while my application runs
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4838546/android-how-does-application-protector-app-work">Android: how does application Protector app work?</a>  </p>
</blockquote>



<p>Restated: Apps like APP Lock and Smart App Protector somehow take the link between the application's icon and the app and put a subroutine (?) in between them so a password is required before the application will launch instead of the app launching immediately after the icon is pressed. How is that accomplished?</p>
