A type of authentication that requires the user to provide something that they have, such as a key fob, electronic chip, or smart card.

A type of authentication that requires the user to provide something that they are, such as a fingerprint, handprint, retinal pattern, face, or voice.

Authentication that requires two or more evidences of authentication, usually of different types.

A method of authenticating with one system to gain access to other related systems.

A type of access control where a user has complete control over a resource, and also determines the permissions other users have to those resources.

A type of access control that restricts access based on the user's role in an organization.

A type of access control that historically was associated with multilevel security and military systems and may use a security clearance to restrict access to resources. The security manager controls the security policy, and users aren't able to override the policy.

The process of keeping track of user activity while attached to a system.

The capturing and storing of computer and user events.

The ability to ensure that someone can't deny that they performed a certain act.