For the context: partial passwords have been the default and a de facto standard for Polish banks since early 2000s. They are not "cutting edge novel idea" but

For the context: partial passwords have been the default and a de facto standard for Polish banks since early 2000s. They are not "cutting edge novel idea" but more a common legacy. I think people got used to them, so changing this now for everyone would feel weird (and would probably annoy many). In some banks you can opt-out in settings and have regular password instead. I guess it's an equivalent of swipe cards in USA.