Before doing this you need to call UB customer service (02)841-8600 so they will reset your transaction password an you will be able to nominate a new one.
Transaction Password Reset Procedure
When your transaction password has been reset you will be prompted to create a new transaction password. You as an follow the following procedure below:
1.) Login online using your Login details
2.) Go to "MY PROFILE" then, on the left side click "RESET TRANSACTION PASSWORD"
3.) Upon clicking the "RESET TRANSACTION PASSWORD" the system will prompt a confirmation
4.) Upon confirmation, the system will prompt you the default password - it will be the last or first 10 digits of your ATM card number.
5.) Now you need to create a new password, one that is different from the last 4 transaction passwords you have previously used. The system will prompt you for a successful "Password Change".
That's it! Simple as 1-2-3. Now if you don't know which is your card number is a photo below for your reference.