Category: Identity & Access Management

Personal Identity Verification

Also known as: PIV, PIV Card

Simply put

Personal Identity Verification (PIV) refers to a secure, government-issued identity card, typically a smart card, that holds a federal individual's identity credentials. It is used to confirm who a person is before granting them access to federal facilities and information technology systems, generally as part of multifactor authentication. Issuance is tied to a standardized background investigation process.

Formal definition

PIV is a physical credential (commonly a smart card) issued to a government individual that contains stored identity credentials used to authenticate the holder to federal IT resources and physical facilities, typically supporting multifactor authentication. The PIV framework originates from Homeland Security Presidential Directive 12 (HSPD-12), which requires a standard background investigation process as a condition of issuance. In many implementations PIV relies on X.509 digital certificates stored on the card for authentication. A related construct, Derived PIV, is a credential issued based on proof of possession and control of an existing PIV Card so that the identity proofing process need not be duplicated, for example, to support mobile or non-card form factors. Readers should verify the current governing NIST standards and applicable revisions for detailed technical and issuance requirements, and should not assume PIV requirements map identically across federal civilian, defense, and national security systems.

Why it matters

PIV credentials are a foundational element of federal identity, credential, and access management because they bind a verified individual identity to a physical, tamper-resistant artifact that can be used consistently across both physical facility access and logical access to IT systems. Rather than relying on passwords alone, PIV supports multifactor authentication, something the holder has (the card) combined with something the holder knows (such as a PIN), which raises the assurance that the person requesting access is who they claim to be. Because issuance is tied to a standardized background investigation process defined under Homeland Security Presidential Directive 12 (HSPD-12), the credential also carries an implied vetting pedigree that separate, ad hoc identity systems generally cannot match.

Who it's relevant to

Information System Security Managers (ISSMs) and ISSOs

Personnel responsible for logical access controls need to understand how PIV supports multifactor authentication to federal IT resources, how card-based certificate authentication is configured, and where Derived PIV credentials may be appropriate for mobile or non-card use cases. They should confirm the specific control and configuration requirements against the current governing NIST standards for their system's environment.

Identity, Credential, and Access Management (ICAM) teams

Teams operating credentialing and access programs administer PIV issuance, lifecycle management, and integration with physical and logical access systems. They must account for the HSPD-12 background investigation process as a condition of issuance and evaluate when Derived PIV is used to avoid duplicating identity proofing.

Government contractors and personnel requiring federal access

Individuals who need access to federal facilities or IT systems may be required to obtain a PIV credential, which entails completing the standard background investigation process defined under HSPD-12. Contractors should confirm the specific credentialing requirements with the sponsoring agency, as issuance procedures and applicability can vary by environment.

Authorizing Officials and compliance auditors

Those evaluating whether a system meets identity and authentication requirements should treat PIV as one component of an access control approach and verify that its implementation aligns with the current applicable standards. They should not assume PIV requirements are identical across federal civilian, defense, and national security systems, and should confirm the governing revision when assessing compliance.

Inside PIV

PIV Credential (Smart Card)

A tamper-resistant identity card issued to federal employees and contractors that carries identity credentials, generally including cryptographic keys and certificates used for authentication. The card serves as the physical token in a broader identity management system.

Identity Proofing and Enrollment

The vetting process by which an applicant's identity is verified before a credential is issued, typically involving background investigation elements and biometric capture. Specific proofing requirements should be confirmed against the current governing publications and issuing agency policy.

Cryptographic Certificates and Keys

PKI-based certificates stored on the card that support authentication, and in many implementations digital signature and encryption functions. The exact certificate set may vary by issuer and card configuration.

Biometric Data

Biometric identifiers (such as fingerprints) captured during enrollment and used to bind the credential to the individual and to support identity verification at issuance and, in some cases, at use.

Authentication Mechanisms

PIV supports multi-factor authentication combining the physical card (something you have) with a PIN (something you know) and, where implemented, biometrics (something you are), enabling both physical and logical access control.

Common questions

Answers to the questions practitioners most commonly ask about PIV.

Does possessing a PIV card by itself grant a user access to a system or facility?

No. A PIV card is an identity credential; it attests to a vetted identity and provides authentication factors, but it does not by itself confer authorization. Access decisions depend on separately provisioned entitlements, role assignments, and access control policies. Authentication (proving who you are with the card) and authorization (what you are permitted to do) are distinct functions, and possession of a valid PIV credential does not automatically map to any given system's or facility's access rights.

Is PIV the same thing as the DoD Common Access Card (CAC)?

They are related but not identical, and they should not be treated as interchangeable. PIV is the governmentwide identity credential concept generally associated with HSPD-12 and the FIPS 201 standard maintained by NIST. The CAC is the DoD's implementation used across defense components. A CAC is generally designed to be PIV-compliant, but organizational scope, issuance authorities, and specific usage can differ. Readers should verify the applicable requirements against current DoD and NIST authoritative sources rather than assuming full equivalence.

What standard governs the technical requirements for PIV credentials?

PIV requirements are generally anchored to the FIPS 201 standard maintained by NIST, along with associated NIST Special Publications that provide supporting guidance. Because these publications are revised over time, the specific technical requirements, card data model elements, and cryptographic expectations depend on the applicable revision. Implementers should confirm the current version of the governing standard and any agency-specific tailoring before relying on particular technical details.

How does PIV support multifactor authentication in practice?

PIV credentials generally combine something the user has (the card and its embedded cryptographic keys) with something the user knows (a PIN), and in many implementations something the user is (biometrics captured during issuance or verification). When used for logical access, the card's cryptographic authentication is typically paired with the PIN to meet multifactor authentication objectives. Exact configurations, supported authentication mechanisms, and acceptable use cases vary by system and by the applicable guidance revision, so implementers should validate against current authoritative sources.

Can a PIV credential be used across different agencies or systems?

PIV was conceived as an interoperable, governmentwide identity credential, so in principle a credential issued by one agency can be recognized by others that support PIV-based authentication. In practice, cross-agency acceptance depends on each relying system's configuration, trust relationships, and policy decisions. Interoperability is a design goal rather than a guarantee for any specific system, and organizations should confirm whether a particular relying party accepts externally issued PIV credentials.

What should organizations consider for PIV credential lifecycle management?

PIV credentials are subject to lifecycle processes that generally include identity proofing and vetting, issuance, PIN management, certificate maintenance, revocation, and eventual termination when a holder separates or no longer requires access. Because credentials and their associated certificates have finite validity, organizations typically need processes to monitor expiration, handle lost or compromised cards, and revoke credentials promptly. Specific lifecycle requirements and timelines depend on the applicable standard revision and agency policy, which should be verified against current official sources.

Common misconceptions

A PIV card is simply an ID badge for physical building access.

PIV is a credentialing framework that supports both physical access to facilities and logical access to information systems. The card carries cryptographic credentials that enable multi-factor authentication, not merely visual identification.

PIV, PIV-I, and CAC are interchangeable terms for the same credential.

These are related but distinct. The Common Access Card (CAC) is the DoD's implementation, while PIV credentials are issued to federal employees and contractors more broadly. Readers should verify which credential type and issuing authority apply to their specific environment, as scope and applicability differ.

Possessing a valid PIV card by itself proves a user is authorized for a given system.

The credential establishes identity and supports authentication, but authorization to access a specific system is a separate determination governed by access control policy and privilege management. Authentication and authorization should not be conflated.

Best practices

Enforce multi-factor authentication using the PIV card together with a PIN, rather than relying on the card as a single factor.

Configure information systems to accept PIV-based authentication for logical access where feasible, integrating the credential into both physical and logical access control programs.

Validate credential and certificate status at the time of use so that revoked or expired credentials are not accepted.

Confirm identity proofing and enrollment procedures against the current governing publications and your issuing agency's policy, since specific requirements may change across revisions.

Protect biometric and enrollment data in accordance with applicable privacy and safeguarding requirements for the associated information.

Verify which credential type applies to your environment (for example, PIV versus a DoD CAC implementation) and confirm the corresponding authoritative requirements before relying on interchangeable assumptions.