In highly secure environments where Smart Cards are the preferred method for authentication, Windows 7 is the system that allows you to use Smart Cards without requiring any specific vendor software. In addition, Windows 7 allows you to fine tune the authentication mechanism through the use of policies. Why Smart Cards? Smart Cards are more secure than other means of authentication such as user names and passwords. They store digital certificates where an administrator can immediately revoke the certificate stored on a lost or stolen Smart Card from the system.