I'm banking (among others) with a Spanish bank that has a German website. They have the weird idea of using your id card number as online account number. Except that this number changes every 10 years for German ID cards, as German ID cards get reissued. Which means that also my login ID was changed without further notification to me.

The website also had until recently another weird Spanish UI custom. You had to enter the password for the website by clicking the letters on a jumbled keyboard, for extra security like this:

Back when I had to use such a keypad at work, the custom was to change the password to 12345678 , to make entering less taxing.

I wonder what other stuff I'll discover in my stay with that bank.