How to register for fingerprint authentication?

If your device supports fingerprint (In Android, devices with Android 6.0 and above are allowed), you will be once prompted to allow biometric authentication at the time of  registration. In case you skip and wish to register later, you can do so from the “Fingerprint Authentication” section under “Settings”. Registration for fingerprint authentication is CRN and device specific. You will need to register separately for each CRN and on each device. 
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