1. It is my choice whether to use a smartphone or not, what I feed into it, and whether I can choose for biometric authentication. Aadhaar does not give these option. The first option of choosing Aadhaar itself is not there.
2. Aadhaar can be used for mass surveillance. There is almost no other useful function a national biometric database accomplishes. It is not good enough for authentication purposes because no biometrics system in the world is 100% accurate. Smartphone biometrics are stored on the device itself. Once compromised, biometrics are compromised for life. All this requires is a high resolution image of your finger.
2. Aadhaar can be used for mass surveillance. There is almost no other useful function a national biometric database accomplishes. It is not good enough for authentication purposes because no biometrics system in the world is 100% accurate. Smartphone biometrics are stored on the device itself. Once compromised, biometrics are compromised for life. All this requires is a high resolution image of your finger.