OCAC has been appointed as Authentication User Agency (AUA) by UIDAI for providing Aadhaar based authentication services to various departments for enabling Aadhaar based service delivery. Under this service, OCAC is connected with UIDAI’s Central Identities Data Repository (CIDR) through UIDAI empanelled Authentication Service Agency (ASA) for providing secure and prompt authentication services. OCAC’s AUA services are availed bySub-AUA’s (different Departments of Government of Odisha) to instantly verify the identity of the Aadhaar holder against the available data in CIDR. Based on the needs of the service, different identifiers could be used along with Aadhaar number. These identifiers could be combination of biometrics (such as fingerprints, iris impressions) and/or demographic information (such as Name, Date of birth, Address) and/or a secret PIN or OTP (One Time Pin).