SHORT ANSWER:
You can lock your Aadhaar biometrics online through the UIDAI website.
DETAILS:
- Visit the UIDAI website and log in using your Aadhaar number and OTP.
- Navigate to the "Lock/Unlock Biometrics" option.
- Choose to lock your biometrics.
PUNISHMENT / IMPLICATIONS (if applicable):
- No punishment, but locking biometrics may restrict access to services requiring biometric authentication.
SOURCE:
- Aadhaar Act, 2016 / UIDAI
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