title: Custom login/lock screen in OS X Mavericks
body: <p>I'm trying to override the default login/lock screen in OS X to allow the user to login in other way than providing a password (think fingerprint scanner or how "Knock to unlock" works), and I'm looking for a way to do it for hours now - all I found that looks useful is the Authorization Plugin ADC reference and this example: <a href="https://developer.apple.com/library/mac/samplecode/NameAndPassword/Introduction/Intro.html#//apple_ref/doc/uid/DTS10004022">https://developer.apple.com/library/mac/samplecode/NameAndPassword/Introduction/Intro.html#//apple_ref/doc/uid/DTS10004022</a> </p>
  
  <p>This NameAndPassword xcode project is a little outdated, but I managed to build it simply by specifying the Base SDK (there was a hardcoded wrong path), then I put the resulting .bundle file into <code>/Library/Security/SecurityAgentPlugins</code> directory. Nothing changed after I locked my screen, but I know I need to add the authorization role to <code>/etc/authorization</code> file, which I know no longer exists in Mavericks (there is this auth.db file and the whole auth API), but I'm therefore stuck here - I don't know how to put NameAndPassword inside this database. </p>
  
  <p>Please let me know how do I do it right, or if you know some other way to achieve my goal.</p>