Mandatory Aadhaar biometric update: Your Aadhaar may be deactivated due to this reason

Children under the age of five years do not have their fingerprints or iris biometrics taken for Aadhaar enrollment because they are not yet developed enough.

As per existing rules, therefore, fingerprints, iris and photo are mandatorily required to be updated in his/her Aadhaar when the child reaches the age of five years. This is known as the first Mandatory Biometric Update (MBU).