Access control devices properly identify people, and verify
their identity through an authentication process so they can
be held accountable for their actions. Good access control
systems record and timestamp all communications and
transactions so that access to systems and information can
be audited at later dates.

Reputable access control systems all provide authentication,
and administration. Authentication is a process in which users
are challenged for identity credentials so that it is
possible to verify that they are who they say they are.