This option is also made available online. Now you can lock /unlock your Aadhar number online by sitting at any place around the globe. By locking your Aadhar number online one gets the advantage of not letting anyone else misuse one's personal information. This is because each time an unknown individual will try to get access to the Aadhar number he/she will require a virtual ID authentication thus simply cropping up the privacy and securities issues faced once by each of us.

Now let's move to our main topic of concern that is how to lock/unlock Aadhar numbers online? To answer this query of yours, we need to follow some simple steps.

First, let us discuss how to lock an Aadhar card. The steps to lock your Aadhar card through SMS are as follows:-

To register online for voter ID or Electors photo ID card follow the below-mentioned steps: -
  • STEP 1: From the registered mobile number send an SMS to the digits “1947”.The SMS should be in the following format:
    Here in place of XXXX, you require to put the last four digits of your Aadhar card number.
    Eg : Your Aadhaar no is 578 1234 251
    then SMS will be sent as GETOTP4321
  • STEP 2: Once you are done with the SMS part you will receive an OTP.
  • STEP 3: As soon as you receive the OTP you need to send another SMS in the format LOCKUIDXXXX. Here too in place of XXXX you need to fill the last four digits of the Aadhar number followed by the OTP(six-digit)sent on your registered mobile number.
  • STEP 4: After you are done with sending this message the UIDAI will lock your Aadhar number. A confirmation message regarding the same will be sent soon on your registered mobile number.
Hence your Aadhar number will get locked. Now to unlock your Aadhar number follow the below-mentioned steps:-
  • STEP 1: Similar to what you need to do for locking the Aadhar number here too you require to send an SMS to the same number that is “1947”.
  • STEP 2: The format of the SMS will be GETOTP followed by the last four digits of your Aadhar number.
  • STEP 3: Once this OTP is sent you need to send another SMS. The format will be UNLOCKUID followed by the last four digits of the Aadhar number.
  • STEP 4: You also need to send the six-digit OTP sent to 1947.
  • STEP 5: As soon as you are done with all these your Aadhar number will be unlocked by UIDAI.
  • STEP 6: Soon you will receive a conformational message.
So by following these steps you can easily lock/unlock your Aadhar card. Now let's see how to lock/unlock the Aadhar number online. First, let's discuss locking your Aadhar number. Follow the below-mentioned steps:-
  • STEP 1: Open any web browser.
  • STEP 2: Go to the URL bar and type
  • STEP 3: As soon as the website of the UIDAI gets opened click on the My Aadhar tab.
  • STEP 4: Go and choose the option Aadhar services.
  • STEP 5: Click on the Aadhar lock/unlock option that appears under the tab.
  • STEP 6: Choose the option “Lock UID”.
  • STEP 7: Enter the details asked like pin code, security code, etc.
  • STEP 8: After filling in all the information required click on send OTP.
  • STEP 9: An OTP will be sent to your registered mobile number.
  • STEP 10: Enter the OTP as soon as you get it because it will be valid for hardly 10 minutes.
  • STEP 11: Enter the OTP.
  • STEP 12: Finally click on submit.
  • STEP 13: Your Aadhar number will get locked.
For unlocking your Aadhar card or Aadhar number via online method follow the below-mentioned steps: -
  • STEP 1: Search on the web browser
  • STEP 2: Go to my Aadhar tab and open Aadhar services.
  • STEP 3:As soon as you open Aadhar services you will find an option stating Aadhar lock/unlock.
  • STEP 4:Select the option to unlock UID.
  • STEP 5: Enter the virtual ID created by you followed by the security code to proceed further.
  • STEP 6:Select and click on the option send OTP and enter the OTP sent on your desired mobile number.
  • STEP 7:Click on submit option and your Aadhar will be unlocked.

The same process you need to repeat for locking your Aadhar card. Hope this article was useful to you.

CA Abhishek Soni
CA Abhishek Soni

Abhishek Soni is a Chartered Accountant by profession & entrepreneur by passion. He is the co-founder & CEO of Tax2win is amongst the top 25 emerging startups of Asia and authorized ERI by the Income Tax Department. In the past, he worked in EY and comes with wide industry experience from telecom, retail to manufacturing to entertainment where he has handled various national and international assignments.