I've got so many different logins that its impossible to remember them all. When I was in hospital I couldnt even remember my password for this site to be able to log in. I havent a hope in hell of remembering some of the more secure passwords I have.
As regards to Bank, no those details are not saved anywhere aside from in my head... but it really did my head in yesterday trying to check my banking, make a payment to my credit card.. and change details of new debit card where I frequently shop. Must have taken me the best part of an hour to do something that should only have taken 10mins at the most. I felt like I was having to jump through hoops simply because I got a new card and involved about half a dozen of those one time PINs they send to your phone. My Visa log in has now got to the point I do have to refer to something 'on paper' as a reminder.
My Bank account requires memorising a 10 digit no, entering a 3 random chars from my password, entering 2 security words, then using a small card size token generator (its like a tiny calculator) for which I have got through about another 2 steps one of which is entering my PIN, before I get a token code to enter into the website. Yet despite going through all that I still ended up with them sending me passcodes to my phone. Its almost like they are trying to discourage web logins on a desktop and want you to use their app on your phone.
It does worry me with having a neuro disease, and days when I cant remember certain words never mind passwords, that at some point I will forget and not be able to log in when I need to. :/