Biometric data include your iris and finger prints. UIDAI allows you to lock these information so that no one else can use it for authentication on any biometric devise.
Lock/unlock your Aadhaar biometric data- Here are Ways :-
1. Go to this link- https://resident.uidai.gov.in/biometric-lock
2. Login using your 12 digit Aadhaar number or 16 digit VID to reach the Biometric Lock system.
3. Enter captcha/security code………Read More>>