Physical Security Interoperability Alliance (PSIA) hosted a special interoperability event with seven companies involved in the access control market, demonstrating the emerging Public Key Open Credential (PKOC) specification. The validation testing was hosted at the Convergint facility in Centennial, Colorado and featured products from Elatec, JCI, Kastle Systems, Last Lock, rf IDEAS, SAFR Scan (RealNetworks), and Sentry.