The pivCLASS solutions portfolio includes a broad selection of contact, contactless, and biometric pivCLASS Readers for agencies to meet the requirements for any assurance level and the NIST SP 800-116 guidelines. The readers work with the pivCLASS Authentication Module (PAM) to meet requirements at any assurance level. The pivCLASS readers also provide fully functional backward compatibility with existing iCLASS and HID Prox readers, easing the transition from legacy cards to PKI-based credentials. Up to two pivCLASS readers can connect to a PAM via four-wire RS-485 connections, typically enabling facilities to reuse much of their existing wiring.