Serial-number like passwords and random strings with the length of 24 or 60 characters at your pleasure.
Because it's safe, but still halfway legible. Because you need new passwords all the time, but you don't want to think of any. The randomly generated character strings contain numbers, special characters, capital and small letters and can be used as passwords in the lengths of 24 or even 60 characters provided above. The use is anonymous and the generated codes are of course not stored here!