In a company a personalized smart card is used for both physical and logical access control. What is the main purpose of the person’s picture on the smart card?

The primary purpose of a person's picture on a smart card is for visual authentication. When the card is presented for access, a human, such as a security guard, can visually compare the photograph on the card to the person presenting it. This process verifies that the individual is the legitimate owner of the card, thereby authenticating their identity. This is a crucial step in preventing unauthorized use of lost or stolen cards, particularly for physical access control where a human guard is present.

B. To authorize the owner of the card: Authorization concerns the permissions granted (e.g., which doors to open), which are managed by the card's chip or a central database, not the visual photograph.
C. To identify the role of the card owner: While a card may indicate a role through text or color-coding, the photograph's specific purpose is to link the card to a unique individual, not their job function.
D. To verify the iris of the card owner: Iris verification is a sophisticated biometric process requiring a specialized scanner to analyze the live eye; a static photograph on a card cannot be used for this purpose.

1. National Institute of Standards and Technology (NIST) Federal Information Processing Standards Publication (FIPS) 201-3, "Personal Identity Verification (PIV) of Federal Employees and Contractors" (January 2022).

Section 4.1.1, "Visual Authentication," states: "The PIV cardholder’s facial image is printed on the front of the PIV card to allow for visual identity verification by a human guard. The guard shall verify that the cardholder’s appearance matches the facial image on the card." This directly confirms the picture is for authentication.

2. National Institute of Standards and Technology (NIST) Special Publication (SP) 800-53, Revision 5, "Security and Privacy Controls for Information Systems and Organizations" (September 2020).

Appendix F, "Glossary," defines Authentication as: "Verifying the identity of a user, process, or device, as a prerequisite to allowing access to resources in an information system." The visual check of a photo against a person is a direct application of this principle.

3. Pfleeger, C. P., Pfleeger, S. L., & Margulies, J. (2015). Security in Computing (5th ed.). Prentice Hall.

Chapter 1, Section 1.4, "Authenticating Users," discusses methods of authentication. It explains that authentication is the act of proving an asserted identity. A photo ID is a classic example where a guard performs authentication by comparing the photo (a stored characteristic) to the person.