voip drupal multi-factor authentication

Hi All,

I just released the beta version of Multi-Factor Authentication http://drupal.org/project/multifactor and it's associated module, Multi-Factor Call that uses Voip Drupal for additional authentication. There is also a demo site setup at http://voip.stage.mycrux.net/ so feel free to try it out.

Per the module's page:
This module includes a secure method for multi-factor authentication using VoIP Drupal and phone based pin numbers. This enhancement to basic authentication greatly improves security especially for site admins.

How Multi-Factor Pin Authentication Works: