Which concept is considered inherent to a person and used in access control?

Which concept is considered inherent to a person and used in access control?

• A. Biometric ID
• B. Something a person has
• C. Something the person knows
• D. A badge

Answer: (A)

Authentication in access control revolves around three main categories: something you are, something you have, and something you know. When a trait is described as inherent to a person, it means it is intrinsic to them, not something they carry or memorize. Biometric ID fits this because it uses unique biological traits—fingerprints, iris patterns, facial features—that are inherently tied to the individual. These traits are difficult to imitate and provide a direct link to the person being verified, making biometric ID the best fit for an inherent, person-based control factor. The other options describe things you can possess (a badge) or recall (a password or PIN), which are not intrinsic to the person.

Authentication in access control revolves around three main categories: something you are, something you have, and something you know. When a trait is described as inherent to a person, it means it is intrinsic to them, not something they carry or memorize. Biometric ID fits this because it uses unique biological traits—fingerprints, iris patterns, facial features—that are inherently tied to the individual. These traits are difficult to imitate and provide a direct link to the person being verified, making biometric ID the best fit for an inherent, person-based control factor. The other options describe things you can possess (a badge) or recall (a password or PIN), which are not intrinsic to the person.