Aadhaar is one of the most trusted identity systems in India. It carries our fingerprints, iris scans, and other sensitive data. That’s why locking your Aadhaar biometrics is one of the smartest steps to protect yourself from misuse.
Many people don’t know this feature exists, but it can save you from fraud, identity theft, and unauthorized authentication. And the best part? You can lock or unlock it anytime, right from your phone.
In this article, we’ll explore why biometric locking is important, how to do it step-by-step, the benefits, and include a real POV story many Indian users will relate to.
Why Should You Lock Your Aadhaar Biometrics?
Your Aadhaar biometrics include:
- Fingerprints
- Iris scan
- Facial authentication
These are extremely personal and cannot be changed like a password. If someone tries to misuse your Aadhaar for authentication at a bank, SIM center, or any service, biometric locking ensures no one can use your fingerprints without your permission.
Here’s why it matters:
- Prevents fraudulent SIM activation
- Stops unauthorized bank KYC misuse
- Blocks access to your biometric data
- Gives you peace of mind that your Aadhaar is protected
- Lets you control your identity from your mobile anytime
In short: Locking biometrics is like putting a strong lock on your identity.
How to Lock Aadhaar Biometrics (Step-by-Step)
You can lock your Aadhaar biometrics through the mAadhaar app or the UIDAI website.
Here is the simplest method using the official UIDAI website:
1. Visit the UIDAI Biometric Lock/Unlock Page
Search “UIDAI Biometric Lock” on Google or open the UIDAI website directly.
2. Enter Your Aadhaar Number
Type your Aadhaar carefully.
3. Enter the Security Code
A small captcha code will appear type it correctly.
4. Click ‘Send OTP’
You will receive an OTP on your Aadhaar-linked mobile number.
5. Enter OTP and Continue
Once verified, you will see the option to Lock Biometrics.

6. Confirm and Lock
Click Lock.
Your biometrics are now protected and cannot be used anywhere until you unlock them.
It takes less than 2 minutes, and your identity becomes much safer instantly.
How to Unlock Aadhaar Biometrics
You may need to unlock biometrics temporarily for example, while updating Aadhaar details or doing bank KYC.
Here is how:
1. Go to UIDAI Biometric Unlock Page
Same page as before.
2. Enter Aadhaar Number → Captcha → Send OTP
You will receive an OTP on your registered mobile number.

3. Choose ‘Unlock Biometrics’
Click ‘Unlock’. This will temporarily unlock your biometrics.
Note: Biometrics automatically lock again after a short duration for extra safety.
This protects you even if you forget to re-lock them manually.
Benefits of Locking Aadhaar Biometrics
- Highest level of identity protection from misuse
- No unauthorized fingerprint authentication
- Prevents fake SIM, bank account, or loan applications
- Adds a security layer to your Aadhaar data
- You stay in full control of when your biometrics can be used
For anyone serious about safety, locking biometrics is a must.
Real Life POV – When Locking Biometrics Saved Me
“Last year, I received a message that my Aadhaar was used for authentication at a telecom store. I hadn’t visited any store that day. My heart sank. I worried someone might be trying to activate a SIM in my name.
I immediately checked UIDAI and learned about the biometric lock option. Within minutes, I locked my biometrics. The next time someone tried to authenticate using my fingerprints, it failed. That one step protected me from a huge fraud scare. Now, I unlock my biometrics only when needed and lock them right back.”
Many people face similar incidents and Aadhaar’s biometric lock is a simple, powerful safety tool.
FAQs – How Locking Biometric can Help?
1. Is biometric locking mandatory?
Answer: No, but it is strongly recommended for security.
2. Can I unlock biometrics permanently?
Answer: Yes, you can “Disable Locking” on UIDAI to keep biometrics always unlocked.
3. Is there a charge for locking/unlocking?
Answer: No. It is completely free.
4. What if my OTP doesn’t come?
Answer: Ensure your mobile number is linked with Aadhaar; otherwise, update it at an Aadhaar Seva Kendra.
5. Can locked biometrics be misused?
Answer: No. Once locked, your fingerprints and iris cannot be used anywhere.