If you have a child aged 5 or 15 at home, this update is very important for you. UIDAI has once again reminded parents to complete the Mandatory Biometric Update (MBU) in their children’s Aadhaar cards on time.
Ignoring this update could create problems in Aadhaar verification later and may affect important services linked to Aadhaar.
The good news is that this biometric update facility is currently free for eligible children till September 30, 2026.
What Is Aadhaar Biometric Update?
Mandatory Biometric Update (MBU) is the process of updating a child’s biometric details in Aadhaar.
During this update, the following details are captured again:
New photograph
Fingerprints
Eye scan (iris scan)
When Aadhaar is first made for small children, permanent biometric data is not fully recorded because children’s facial features and fingerprints change as they grow.
That is why UIDAI has made biometric updates compulsory at two stages:
When the child turns 5 years old
When the child turns 15 years old
Why This Update Is Important
Today, Aadhaar is required for many important services related to children.
It is commonly used for:
School admissions
Scholarships
Competitive exams
Government schemes
Identity verification
If the Aadhaar card contains old biometric details, authentication may fail. This can create problems while using Aadhaar-linked services in the future.
UIDAI says updating biometrics on time helps avoid such issues.
Free Update Facility Available Till September 2026
Parents can complete the biometric update free of cost for children between 5 and 17 years of age till September 30, 2026.
To avoid last-minute rush, parents are advised to visit the nearest Aadhaar centre as soon as possible.
How To Complete Aadhaar Biometric Update
Parents need to visit:
Aadhaar Seva Kendra
Aadhaar Enrollment Centre
At the centre, the child’s:
Photograph
Fingerprints
Iris scan
will be updated in the Aadhaar database.
The process usually takes only a few minutes.
Documents You May Need
During the update process, officials may ask for:
Child’s Aadhaar number
Basic identity documents
Parent’s Aadhaar card in some cases
Although many documents are not usually required for biometric updates, carrying necessary documents can make the process smoother.
What Happens If You Don’t Update It?
If the mandatory biometric update is not completed on time, Aadhaar authentication may stop working properly.
This can lead to problems in:
Government services
Digital verification
Document authentication
Educational processes linked to Aadhaar
That is why UIDAI is continuously asking parents to complete the update without delay.




