title: Is there a tutorial on how to implement Google Authenticator in .NET apps?
body: <p>I'm looking for a tutorial on how to use <a href="http://code.google.com/p/google-authenticator/">Google Authenticator</a> in .NET-apps. Does this exist, and if so, where can I find it?</p>
  
  <p>I understand that this can be used to add two-factor-authentication to your own apps.</p>