How to Protect Your Aadhaar from Misuse

Aadhaar is widely used for identity verification across banks, government services, SIM verification, and welfare schemes. Because it is linked to your biometric and demographic data, protecting it from misuse is important.

Fortunately, the UIDAI provides several built-in security features that help you stay in control of how your Aadhaar is used. These include locking your biometrics, generating a Virtual ID (VID), downloading a masked Aadhaar, and checking your Aadhaar authentication history to monitor activity.

Sr. No. Protection Methods
1 Lock / Unlock Your Biometrics
2 Generate and Use Virtual ID (VID)
3 Download and Use Masked Aadhaar
4 Check Aadhaar Authentication History
5 File a Complaint with UIDAI

Lock Your Biometrics

Your biometric data (fingerprints and iris scans) is what makes Aadhaar uniquely powerful as an identity tool. It's also what makes it uniquely risky.

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Warning: If someone manages to use your biometrics for authentication, they can authorize transactions without your consent, including unauthorized SIM cards issued in your name, money withdrawn through Aadhaar-enabled payment systems, or even loans taken out without your knowledge.

You don't use biometric authentication on a daily basis. Most of the time, Aadhaar verification happens through OTP. So for the 99% of the time you're not actively using biometric authentication, there's zero reason to leave it unlocked and exposed.

Biometric locking is a feature that completely disables biometric-based authentication on your Aadhaar. Once locked, nobody can use your fingerprints or iris data for any Aadhaar authentication.

How to Lock Biometrics on the myAadhaar Portal

  • Step 1: Go to myaadhaar.uidai.gov.in and log in with your Aadhaar number and OTP.
  • Step 2: Find "Lock/Unlock Biometrics" under the Aadhaar Services section.
  • Step 3: Read the guidelines, then click Next.
  • Step 4: Enter the security code and click "Enable" to lock your biometrics.
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That's it. Your fingerprints and iris scans are now locked. No one can authenticate using your biometrics until you explicitly unlock them.

How to Lock Biometrics on the mAadhaar App

If you prefer doing this on your phone:

  • Open the mAadhaar app and log in with your registered mobile number
  • Tap the three vertical dots in the upper right corner
  • Select "Biometric Settings"
  • Check the "Enable Biometric Locking" option and confirm
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The OTP is sent to your registered number and fed into the app automatically. Once you approve, the lock is active. It may take up to 6 hours for the lock to fully activate.

How to Lock Biometrics on the New Aadhaar App

To lock your biometrics on the new Aadhaar app:

  • Log in using your Aadhaar-registered mobile number and verify via OTP or Face ID.
  • Navigate to the biometric lock option within the app.
  • Enable biometric locking to secure your fingerprints and iris data.

How to Lock Biometrics via SMS

You can also lock your biometrics by sending an SMS from your registered mobile number to 1947. The format is:

LOCKUID [space] last 4 digits of your Aadhaar number

For example, if your Aadhaar number ends in 5678, send:

LOCKUID 5678

If your mobile number is linked to multiple Aadhaar numbers, use the last 8 digits instead of 4.

LOCKUID 34125678

When You Need to Unlock

When you actually need biometric authentication, say, at a bank or an Aadhaar-based payment, you can temporarily unlock your biometrics through the myAadhaar portal, the mAadhaar app, or the new Aadhaar app.

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Note: The unlock is temporary. Your biometrics stay unlocked for only 10 minutes, after which they automatically lock again. You don't need to remember to re-lock them.

To unlock through the portal, log in to myaadhaar.uidai.gov.in, go to Lock/Unlock Biometrics, and click "Unlock." Enter the security code and verify with OTP. Your biometrics will be available for 10 minutes.

To unlock through the mAadhaar app, go to Biometric Settings, uncheck the Enable Biometric Locking option, and confirm with OTP. Same 10-minute window.

To unlock through the new Aadhaar app, open the app, navigate to the biometric lock option, and disable the lock. Verify with OTP or Face ID. Same 10-minute window applies here as well.

Lock vs Disable Biometric

If you decide you don't want biometric locking at all anymore, you can permanently disable the feature. This is only available through the UIDAI web portal (not the app). Once disabled, your biometrics remain unlocked permanently until you choose to lock them again.

Use a Virtual ID (VID) Instead of Your Aadhaar Number

Every time you share your 12-digit Aadhaar number with a bank, telecom company, or any service provider, you're handing over a permanent identifier that's linked to all your personal data. The more places your Aadhaar number exists, the higher the risk of it being leaked or misused.

UIDAI's solution for this is the Virtual ID (VID): a temporary 16-digit number that's mapped to your Aadhaar. You can use it for authentication and e-KYC purposes exactly like you'd use your Aadhaar number.

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VID cannot be reverse-engineered to reveal your actual Aadhaar number. The agency verifying your identity gets a token, not your real number.

Key Things to Know About VID

  • It's a 16-digit random number tied to your Aadhaar
  • It can be used for any Aadhaar authentication or e-KYC service
  • Agencies are required to accept VID in place of your Aadhaar number
  • No agency is authorized to store your VID
  • You can regenerate a new VID anytime (the old one gets deactivated)
  • It's currently valid for one day, after which you can generate a new one
  • It's completely free

How to Generate a VID on the myAadhaar Portal

  • Step 1: Visit the UIDAI website at uidai.gov.in.
  • Step 2: Click on "Virtual ID (VID) Generator" under the Aadhaar Services section.
Screenshot of MyAadhaar portal homepage with arrow pointing to the VID Generator option
Click on the "VID Generator" option
  • Step 3: Enter your 12-digit Aadhaar number and the captcha code.
  • Step 4: Click "Send OTP". The OTP goes to your registered mobile number.
  • Step 5: Enter the OTP, select "Generate VID", and click Submit.

The 16-digit VID will appear on screen and also be sent to your registered mobile number via SMS.

How to Generate a VID on the mAadhaar App

  1. Open the mAadhaar app and log in
  2. Select "Virtual ID" from the menu
  3. Enter the security code and click "Generate VID"
  4. Your VID will be displayed on screen

How to Generate a VID via SMS

Send an SMS from your registered mobile number to 1947 in this format:

GVID [space] last 4 digits of your Aadhaar number

For example, if your Aadhaar number is 9876-5432-1098, you'd type: GVID 1098

You'll receive your VID via SMS.

To retrieve a previously generated VID, send: RVID [space] last 4 digits of your Aadhaar number to 1947.

When to Use VID

Whenever a service provider asks for your Aadhaar number for verification : whether it's a bank, a mobile operator, or any other agency; give them your VID instead. If they insist on the actual Aadhaar number, know that they're not supposed to. UIDAI has mandated that all authentication agencies must accept VID.

The one situation where VID doesn't replace Aadhaar is when you need to make physical changes to your Aadhaar record itself (like updating your address or biometrics at an enrolment centre). For that, you'll need the actual Aadhaar number.

Download and Use Masked Aadhaar

A masked Aadhaar is a version of your e-Aadhaar where the first 8 digits of your Aadhaar number are hidden, showing only the last 4. So instead of displaying your full number like 9876-5432-1098, it shows XXXX-XXXX-1098.

Everything else on the card stays the same : your name, photo, date of birth, gender, address, and QR code are all visible. The document is digitally signed by UIDAI, so it's legally valid as identity proof.

Why Use Masked Aadhaar?

When you submit a photocopy of your Aadhaar for things like KYC verification, hotel check-ins, or any service that takes a copy of your ID, anyone who sees that photocopy has your full Aadhaar number. With masked Aadhaar, they can verify your identity without ever seeing the complete number.

Note: Government welfare schemes using Direct Benefit Transfer (DBT) may require your full Aadhaar number.

How to Download Masked Aadhaar

  • Step 1: Go to myaadhaar.uidai.gov.in and click on "Download Aadhaar".
Arrow pointing towards MyAadhaar portal homepage "Download Aadhaar" option
Click "Download Aadhaar" on MyAadhaar portal
  • Step 2: Choose your identification method : Aadhaar Number, Virtual ID, or Enrolment ID; and enter the details.
  • Step 3: Enter the security code and click "Send OTP".
  • Step 4: Before you verify the OTP, check the box that says "Do you want a masked Aadhaar?"
MyAadhaar Download Aadhaar page with Aadhaar number, Enrolment ID, and Virtual ID input fields, captcha, Masked Aadhaar Card radio button, and Enter OTP input field
Choose Maked or Regular, enter OTP and click on the Verify & Download button
  • Step 5: Enter the OTP and click "Verify and Download".

The masked Aadhaar downloads as a password-protected PDF. The password is the first four letters of your name (in capitals, as it appears on your Aadhaar) followed by your birth year in YYYY format.

For example, if your name is Rajesh Kumar and your birth year is 1985, the password is RAJE1985.

You can also download masked Aadhaar through the mAadhaar app, New Aadhaar App, and DigiLocker, following a similar process.

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Quick Tip: If you already have a regular Aadhaar printout and don't want to download a new one, you can manually mask it by blacking out the first 8 digits with a pen before submitting photocopies. It's a low-tech solution, but it works.

Don't Share Your Aadhaar Publicly

This sounds obvious, but UIDAI has had to repeatedly remind people about this. Your Aadhaar number should never be posted on social media, shared in public forums, uploaded to random websites, or left lying around where anyone can see it.

UIDAI's official position is clear: use your Aadhaar freely for proving your identity wherever required, just like you'd use a PAN card or bank account number. But don't put it in the public domain. You wouldn't post your debit card number on Twitter. The same logic applies to Aadhaar.

Practical Rules for Sharing Aadhaar Safely

  • When giving physical photocopies: Always write the purpose and date on the photocopy before handing it over. Something like "For KYC verification at [Company Name] on [Date]." This way, if the photocopy is misused, you have some traceability. Better yet, use a masked Aadhaar copy.
  • When sharing online: Use VID instead of your actual Aadhaar number. If a website asks you to upload an Aadhaar copy, upload the masked version.
  • Never share your OTP: This is the number one way Aadhaar fraud happens. No legitimate organization will call you and ask for your Aadhaar OTP over the phone. If someone does, it's a scam. Full stop.
  • Avoid using public computers: Don't log in to the UIDAI portal or the myAadhaar portal from shared or public computers. If you must, make sure you log out completely and clear the browser data.
  • Don't store Aadhaar images in unsecured locations: If you have a scanned copy of your Aadhaar on your phone or computer, make sure it's not in a publicly accessible folder or backed up to an insecure cloud service.

Check Your Aadhaar Authentication History Regularly

UIDAI maintains a log of every time your Aadhaar is used for authentication : whether it's OTP-based, biometric, or demographic. You can check this history to see if your Aadhaar has been used for anything you didn't authorize.

Think of it like checking your bank statement. You should be doing it periodically to catch anything suspicious early.

How to Check Authentication History

  • Step 1: Visit uidai.gov.in and go to "Aadhaar Authentication History" under the Aadhaar Services section.
  • Step 2: Enter your 12-digit Aadhaar number (or VID) and the security code.
  • Step 3: Click "Send OTP" and verify.
  • Step 4: Select the authentication type you want to check (Demographic, Biometric, OTP, or combinations), the date range (up to 6 months back), and the number of records you want to see (up to 50 at a time).
  • Step 5: Click Submit. Your authentication history will be displayed.

What to Look For

Each record shows the type of authentication, the date and time, the agency that requested it, and whether it was successful or failed. If you see an authentication request from an agency you've never interacted with, or a biometric authentication that you didn't perform, that's a red flag.

What to Do If You Suspect Fraud or Misuse

If you believe your Aadhaar has been misused or notice unauthorized transactions in your authentication history, here's what to do step by step:

Step 1: Lock Everything Immediately

Lock your Aadhaar biometrics through the myAadhaar portal or mAadhaar app (if they aren't already locked). You can also lock your entire Aadhaar number through the "Aadhaar Lock and Unlock Service." When your Aadhaar number is locked, no authentication can be performed using it. You can still authenticate using your VID.

Step 2: File a Complaint with UIDAI

You have several options:

  • Call 1947: This is UIDAI's toll-free helpline. The IVRS is available 24/7. You can reach a customer service executive Monday to Saturday from 7 AM to 11 PM, and Sundays from 8 AM to 5 PM.
  • File a complaint online: Go to myaadhaar.uidai.gov.in and use the "Grievance and Feedback" section.
  • Email UIDAI: Send details to help@uidai.gov.in with your Aadhaar number, your registered mobile number, and a description of the issue.
  • Aadhaar Mitra chatbot: UIDAI's chatbot is available on their official website for quick queries.
When filing the complaint, be specific. Include dates, what you noticed, and any evidence you have.

Step 3: File a Police Complaint

If the misuse involves financial fraud, identity theft, or any criminal activity, file an FIR at your local police station. You can also report it through the government's cybercrime portal at cybercrime.gov.in.

Step 4: Contact Your Bank

If the fraud involves Aadhaar-enabled payment system (AePS) transactions or any banking activity, inform your bank immediately. Ask them to freeze any suspicious transactions and investigate.

What Happens After You Report

UIDAI investigates complaints and takes action against agencies found violating Aadhaar regulations. The Aadhaar Act, 2016, includes serious penalties for misuse. Identity impersonation can lead to up to 3 years of imprisonment and a fine of ₹10,000. Unauthorized access to the central database carries a penalty of up to 10 years of imprisonment and a minimum fine of ₹10 lakh.

Important Notes

1. All of these features require a registered mobile number.

If your mobile number isn't linked to your Aadhaar, you can't use biometric lock, VID, or masked Aadhaar. Visit your nearest Aadhaar Enrolment Centre to get your number linked.

2. Biometric locking doesn't affect OTP-based authentication.

You can still verify your identity using OTP even when your biometrics are locked. Locking only disables fingerprint and iris-based verification.

3. VID is not mandatory.

You can still use your Aadhaar number directly if you choose to. VID is an additional security layer you can opt into.

4. Locking your Aadhaar number is different from locking biometrics.

When you lock your Aadhaar number (through the Aadhaar Lock and Unlock Service), no authentication of any type can happen using your Aadhaar number. When you lock biometrics only, OTP and demographic authentication still work with your Aadhaar number.