Centrify Corporation today announced Centrify DirectControl for Mac OS X, SmartCard Login Option, which enables Mac OS X users to join Microsoft Active Directory environments that require two-factor authentication via smart cards. The first smart card standard to be supported is Department of Defense Common Access Cards (CAC), used pervasively throughout the DoD and related agencies to authenticate both military personnel and contractors to systems around the world. DirectControl runs natively on both PowerPC- and Intel-based Macs, priced at US$60 per workstation. The SmartCard Login Option is priced at $30 per workstation and the DirectControl for Mac OS X, SmartCard Login Option will be generally available in early March 2007. [Thanks to MacMinute reader Jake Summers for this news tip.]