Lock Aadhaar Biometrics: Steps to Lock and Unlock

You can lock Aadhaar biometrics in a few minutes, and doing so stops anyone from using your fingerprint, iris or face data for authentication. Also, this is a useful safeguard if you worry about misuse of your biometric details. Here is how the lock works, how to switch it on and how to unlock it when you need it.

What it means to lock Aadhaar biometrics

When you lock Aadhaar biometrics, services cannot verify you with your fingerprint, iris or face. So, this affects checks such as KYC for banks and stock market apps, according to a 91mobiles guide. Still, your Aadhaar number itself stays valid.

Therefore, locking is a good habit if you rarely use biometric authentication. Then, it adds a layer of protection, and you can undo it at any time.

Before you start

Keep your phone with the registered mobile number handy, since the OTP goes there. Also keep your 12 digit Aadhaar number ready. If your number is not linked to Aadhaar, you must fix that first at an enrolment centre.

How to lock Aadhaar biometrics on the website

1. Open the UIDAI Aadhaar website and click Login.
2. Enter your 12 digit Aadhaar number and the captcha, then ask for an OTP.
3. Enter the OTP you receive by SMS.
4. Open the Lock or Unlock Biometrics menu and read the information screens.
5. Tick the confirmation box and select Next to finish.

How to lock it in the mAadhaar app

1. Open the mAadhaar app on your Android phone or iPhone. Log in with your mobile number and OTP, and set a PIN if the app asks.
2. Go to My Aadhaar and enter your Aadhaar number, then log in with an OTP.
3. Scroll to Biometrics Lock and tap Lock Biometric.
4. Enter the captcha, ask for an OTP and enter it to complete the lock.

How to unlock when you need it

You may need to unlock when a bank or service asks for biometric verification. On the website, log in the same way, open the Lock or Unlock Biometrics menu and choose Next. You can then pick a temporary or a permanent unlock.

On the app, open My Aadhaar, choose Biometrics Lock and tap Unlock Biometric. Enter the captcha, request an OTP and enter it.

A temporary unlock is the safer choice. It lasts about 10 minutes, so the lock returns on its own after your verification is done. In fact, a permanent unlock removes the protection until you lock again.

When locking helps and when it gets in the way

Locking suits most people who rarely need biometric checks. However, it can block biometric steps such as a fingerprint scan at a bank branch or a face check in an app. In that case, unlock for a short window, finish the task and let the lock return.

If you are worried about other misuse of your identity, also check how many SIM cards are registered in your name. Our guide to checking mobile connections in your name shows how.

Safety tips

• Use only the official UIDAI website or the mAadhaar app, never a link sent by message.
• Never share your OTP with a caller who says they are helping with Aadhaar.
• Keep your registered mobile number active, because every step needs it.
• If a site asks for money to lock or unlock biometrics, leave it. The service is free.

Step by step screens are described in this 91mobiles guide to locking and unlocking Aadhaar biometrics. Menu names can change over time, so follow what the official site shows on the day.

FAQ

Does locking Aadhaar biometrics cancel my Aadhaar?

No. Therefore, your Aadhaar number stays valid. Also, the lock only blocks biometric authentication, and you can unlock it whenever you need.

How long does a temporary unlock last?

About 10 minutes, according to the guide. After that, your biometrics lock again automatically.

Is there a fee to lock or unlock?

No. Both actions are free. Anyone asking for payment is not offering the official service.

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