Changing PIN codes and PUK code

We recommend that you replace the automatically issued PIN and PUK codes of your ID-card immediately: you will better remember the codes you choose yourself. It is also a good idea to occasionally update PIN and PUK codes in case any bystanders have seen you enter your PIN codes.

There are two ways to change your PIN codes:

  • if you remember the valid PIN codes, you can use them to choose new ones in the DigiDoc4 client. 
  • if you have forgotten the existing PIN codes, you’ll need a PUK code to establish new PIN codes.  
  • If you have forgotten the PIN codes as well as the PUK code, you should order a new code envelope

PIN and PUK codes: changing PIN codes with DigiDoc4

Changing PIN codes is very simple and you can do it with the PUK code even if you have forgotten the valid PIN codes. If you remember or have access to your PIN codes, you don’t even need the PUK code.

Changing the codes is very simple: insert your ID-card into the card reader and open DigiDoc4 in your computer. Wait until DigiDoc4 has read your ID-card data and choose ‘My eID’ from the menu.

Then choose which code you would like to change.

To change PIN1 code, click on the button ‘CHANGE PIN1’. 

You must enter the valid PIN1 code and then the new PIN1 code twice.

The PIN1 that was automatically issued to you contains 4 digits. The new PIN1 code can contain 4-12 digits as long as:

  • it contains only numbers;
  • the new PIN1 does not match your previous PIN1; 
  • you don’t choose the same number for your PIN1, PIN2 and PUK code;
  • you avoid using your birthdate and other easily derived codes such as 0000, 1111, 1234 etc.

To change the PIN2 code, click on the button ‘CHANGE PIN2’.

You must enter the valid PIN2 code and then the new PIN2 code twice.

The PIN2 that was automatically issued to you contains 5 digits. The new PIN2 code can contain 5-12 digits as long as:

  • it contains only numbers;
  • the new PIN2 does not match your previous PIN2;
  • you don’t choose the same number for your PIN1, PIN2 and PUK code;
  • you avoid using your birthdate and other easily derived codes such as 00000, 12345, etc. 

To change the PUK code, click on the button ‘CHANGE PUK’.

You must enter the valid PUK code and then the new PUK code twice.

The PUK code that was automatically issued to you contains 8 digits. The new PUK code can contain 8-12 digits, as long as:

  • it contains only numbers;
  • the new PUK does not match your previous PUK; 
  • you don’t choose the same number for your PIN1, PIN2 and PUK code;
  • you avoid using your birthdate and other easily derived codes such as 00000000, 12345678, etc

A message will be displayed on your screen if the code was successfully changed.

PIN and PUK codes: opening blocked or locked PIN codes with a PUK code

Step 1: insert the ID-card into the card reader and open the DigiDoc4 Client

The DigiDoc4 icon should be visible in the computer programs list. A Windows user will also find it under ‘Start → All Programs → card → DigiDoc4 Client’. 

Step 2: open ‘My eID’ from the DigiDoc4 menu

Check that DigiDoc4 shows your personal data and open the option ‘My eID’ from the left menu. Here you can see which certificate’s PIN code is blocked.

Step 3: unblock

In order to unblock PINS, press the button ‘UNBLOCK’. A window with a PIN code unblocking option will be displayed on your screen, where you must enter a valid PUK code and then the chosen PIN code twice.

Unblocking PIN1 (person identification) and PIN2 (signing) works the same way, but you should remember that:

  • PIN1 code must contain 4-12 digits;  
  • PIN2 code must contain 5-12 digits.  

The new code must be different from the previous PIN code, include only numbers and not match (neither partially or fully) your personal identification code.

Fill in the columns and press the button ‘UNBLOCK’. If they PUK code was entered correctly and the new PIN codes complied with the requirements and matched each other, you can see the notice on your screen that the PIN code is unblocked.

What if the PUK code is locked?

If you entered the PUK code incorrectly three times in a row, this will be locked too. In order to continue using your ID-card electronically, you must order a code envelope with new PIN and PUK codes from the Police and Border Guard Board or at the foreign representation of the Republic of Estonia.