From SCM Microsystems:
This video will show you how to get your CAC working on all military websites with your Mac. For future support or questions, please let us know. In addition, Centrify DirectControl for Mac OS X has also received the Department of Defense (DoD) Joint Interoperability Test Command (JITC) certification for support of Common Access Cards (CAC) Smart Cards and strong authentication.
Best Military Cac Reader For Mac
Update your SmartCardReader USB drivers for model SCR3310.
Best Cac Reader For Macbook
SCM's SCR3310 and SCR3310v2.0 are small and ergonomic USB smart card readers, with backside mounting holes. The readers are ISO 7816 compliant, and can be used for cards in ID 1 card format.
This installer contains PC/SC driver and CT-API library and can be used for SCR531 USB, SCR331 CCID, SCR333, SCR335, SCR355, SCR338, SCR3310, SCR3311, SCR3320, SCR3340, @MAXX Family and SCT3511
SCR331 and SCR531 users note that only readers that have CCID firmware are supported. Readers that have firmware Rev 2.0 and above are CCID. This driver may also be used with the following third party products: Goldtouch ErgoSecure SC 2.0 keyboard, Datakey DKR830. If the host is running Windows 98 SE or Windows Me, ensure that Microsoft Smart Card Base Components are installed on the host before atempting to install the drivers.