What is a credential in the context of access control systems?

In the context of access control systems, a credential refers to a general identification device that is utilized to establish a person's identity. Credentials serve as a means for individuals to prove who they are before being granted access to a particular system, facility, or area. This can include various forms of identification, such as ID cards, biometric data (like fingerprints), passwords, and security tokens.

Understanding that credentials are fundamentally about identifying and authenticating individuals helps clarify their role within broader security frameworks. They are essential for ensuring that only authorized individuals can gain entry to sensitive areas or data. This identification aspect is crucial in any security system, which requires verification of a person's identity prior to granting access, thereby enabling effective control over who has permission to enter or utilize certain resources.