Aadhaar Authentication


The Aadhaar number or the authentication thereof shall not, by itself, confer any right of, or be proof of, citizenship or domicile in respect of an Aadhaar number holder. Several requesting entities (or service providers) require individuals to submit their identity proofs that serve as an enabler for providing consumer services, subsidies or benefits. While collecting such identity proofs, these service providers face challenges in verifying/validating the correctness of identity information documents or proofs submitted by individuals. The purpose of Aadhaar Authentication is to provide a digital, online identity platform so that the identity of Aadhaar number holders can be validated instantly anytime, anywhere. UIDAI offers Aadhaar-based authentication as a service that can be availed by requesting entities (government / public and private entities/agencies). This service from UIDAI can be utilized by the requesting entities to authenticate the identity of their customers / employees / other associates (based on the match of their personal identity information) before providing them access to their consumer services / subsidies/ benefits / business functions / premises.


The authentication service is provided in online and real-time manner by UIDAI through its two data centres i.e. Hebbal Data Centre (HDC) and Manesar Data Centre (MDC) where online services for authentication and other services such as e-KYC are deployed in active-active mode to ensure high availability of services. The UIDAI’s Central Identities Data Repositotry (CIDR) is currently capable of handling tens of millions of authentications on a daily basis, and can be scaled up further as demand increases. Many requesting entities that provide services to Aadhaar number holders have integrated Aadhaar into their domain applications for improved service delivery anywhere in the country in a real-time, scalable, interoperable manner.