What is controlled access?

Answer 1

Access control refers to exerting control over who can interact with a resource. Often but not always, this involves an authority, who does the controlling. The resource can be a given building, group of buildings, or computer-based information system.

Access control is, in reality, an everyday phenomenon. A lock on a car door is essentially a form of access control. A PIN on an ATM system at a bank is another means of access control. The possession of access control is of prime importance when persons seek to secure important, confidential, or sensitive information and equipment.[citation needed]

Item control or electronic key management is an area within (and possibly integrated with) an access control system which concerns the managing of possession and location of small assets or physical (mechanical) keys.[citation needed]

Answer 2

Access control identifies users by validating multiple login credentials, including usernames and passwords, PINs, biometric scans, and security tokens. Many access control systems also include multi-factor authentication (MFA), which requires the use of multiple authentication methods to verify a user's identity.

Answer 3

Access control is the practice of restricting entrance to a property to authorized personnel, or, in technology, the process of permitting or denying access to a particular resource.