CHUID (Cardholder Unique Identifier)

A standardized cardholder identifier used across PIV (Personal Identity Verification) and PIV-I (PIV-Interoperable) credentials, defined in FIPS 201. CHUID is a structured byte sequence — typically 18 bytes for the FASC-N portion plus optional GUID, expiration date, agency code, and digital signature — encoded in a card-format wrapper readable over Wiegand, ISO 14443, or NFC.

CCURE 9000's Victor API exposes Badge.CHUID and Badge.CHUIDFormatID as discrete fields — the connector's typical formula maps it as '000000$BadgeId' (zero-padded card number). For federal and federal-adjacent deployments (DoD, GSA, large defense contractors), CHUID-formatted credentials are mandatory — the PACS must support reading and validating them, and the provisioning system (Guardian) must populate them correctly.

Beyond federal, CHUID is increasingly seen in critical-infrastructure deployments (utilities, healthcare, transportation) where customers want PIV-grade credential trust without full federal-PKI certificate chains.