 For example, an account holder might use the same password for several different accounts, deliberately choose easy-to-remember passwords that are too vulnerable to cracking, or rely on written records of their passwords.Many sites, in an attempt to prevent users from choosing easy-to-guess passwords, add restrictions on password length or composition which contribute to password fatigue.In many cases, the restrictions placed on passwords actually serve to decrease the security of the account (either by preventing good passwords or by making the password so complex the user ends up storing it insecurely, such as on a post-it note).