MKB NetBankár Website→

It only accepts lowercase letters, uppercase letters and numbers (any other character counts as forbidden character). Also, if your password contains any invalid character, it will get marked as "Identical to the former 10 passwords".

To make it more fun, during the registration, it allows to set a 24 characters password to login to their website. Once you try to login with the password, it will say that the maximum length accepted is 16 characters. What actually happens, is that they let you insert 24 characters during registration, but only the first 16 will get actually used as password.