Use the lock decode function to reset your PIN code. Go to the specified website: http://moica.nat.gov.tw (Certification Operation/Forgot PIN Code/Decode and Unlock Instructions) and click “Lock Decode” and enter your “Subscriber Code”. You will complete the operation after entering a new PIN code.

Your initial PIN code is formed by six digits, representing respectively the year, the month and the day of birth. For instance, if your birth falls on 15 March 66 (ROC Calendar), your PIN code would be 660315. But your birthday is easily known by others. To ensure security, you are advised to change the PIN code. Go to the website: http://moica.nat.gov.tw (Certification Operation/Changing PIN Code Instructions).

Go to the website: http://moica.nat.gov.tw (Certification Operation/Changing PIN Code Instructions) to change your PIN code. You must first check the system recommendations and relevant settings, then click “Change PIN Code”. Enter the old PIN code once and the new PIN code twice to complete this process.

Please check and verify the following:

1. Go to the Interior Ministry CA website: http://moica.nat.gov.tw (Certification Operation/IC Card Data Review) to check if you can normally access information, also check if you have properly installed the card reader.
2. Check that your IE version is 5.5 or above and that the encryption strength is 128 bit or above. To check your browser version, please click “Explanations” on top of the browser menu, then click “About Internet Explorer.”
3. Add the applicable certification website to the reliance website. Click in this order: IE/Tools/Internet Options/Security/Reliance Website/Website. Uncheck https and add the websites of moica.nat.gov.tw, 210.241.69.188 and 61.60.9.41 to become Reliance Websites and upgrade security of the Reliance Websites.
4. Under Active X, check all the options (IE/Tools/Internet Options/Security/Reliance Website/Self-Set Level/Active X and Inserted Components. After setting all options in Active X of the IE Browser, click “General” in the label page. Carry out “Delete Cookie” and “Delete Files” and check to delete all the offline contents. Click “Confirm” to leave the internet options and reopen the IE Browser. You can then change your PIN code.

You must first verify the following:

1. Check that you have correctly installed your card reader (and drivers have correctly completed installation).
2. That the IC card has inserted into the card reader in the right direction.
   Correct card insertion: Push the card firmly inside with the IC chip facing upward.