When I opened my Wells Fargo checking account, they let me choose my own PIN number for my debit card. I was quite surprised, because previously other banks alw

When I opened my Wells Fargo checking account, they let me choose my own PIN number for my debit card. I was quite surprised, because previously other banks always sent me a 4-digit number that I had no influence on. I became even more surprised when I was told that I don't have to restrict myself to 4 digits! So, I entered a sequence of 12 or so digits that I happen to be able to remember easily but that otherwise follows no patterns as e.g. the ones mentioned in this article. I thought I was so smart! Except when I later found out that a lot of card readers in convenience stores accept a maximum of 8 digits for card PINs :-( I can't use my card there. So much for being a paranoid computer scientist...