Earlier quoted context omitted.
BMO in Canada forces 6 digits or alphanumerics as your account password. No more, no less. What's worse, because it can be entered on the phone, aAbBcC are all == 1. So it's really just 6 digits.
Somewhere, in the background, there's a poor old unix mainframe running Cobol, unaware that the world around it has changed, and that it should put to pasture, where it can live out the rest of its days in peace.
(Obligatory xkcd comic: https://xkcd.com/1926/ )