Aadhaar authentication is the process wherein Aadhaar Number, along with other attributes, including biometrics, are submitted online to the Aadhaar system for its verification based on information or data or documents available with it. During the authentication transaction, the resident’s record is first selected using the Aadhaar Number and then the demographic/biometric inputs are matched against the stored data which was provided by the resident during enrolment/update process. Registered devices provide three key additional features compared to public devices