Why do I need a username and password to use Aeon?
Your username and password allows us to give you secure access to information about your requests. We can also enable you to edit your personal information such as your address or phone number.
Your username can be anything you like, such as your name, abbreviations, or an alphanumeric code. Your password also can be anything you like. We recommend that you follow good security practice and choose a password that is different from those you use to access other systems. However, no one but you will know your password, not even the special collections staff. The password you set is stored encrypted.
(Taken from this page: https://scpatron.lib.uiowa.edu/aeonauth/FAQ.html)