lol my bank only accepts 4 digit numbers passwords.
To log in to the site I have to supply my login/password, then on the next page my 4 digit pin, then on the next page the answer to one of three rotating security questions.
On the phone app, after the phone was authenticated the first time, I only have to enter my 4 digit pin to access my account. IIRC, that policy is at my option.
I'm not sure if that's all a good thing, or theater, but that's what they have.
It took them years before they finally listened to reason and allowed you to have a stronger password