Warning! Not your average bitching answer. Well, let’s do a quick recap of what Aadhaar, an authentication system, does. The end-user/application supplies some data to the system, like Aadhaar number, name, age, DOB, etc. which is to be authenticated. The Aadhaar system compares this with its own record, and would like to verify with OTP and biometrics that the authentication request is indeed by the guy whose data is being processed.