An Auto Login page is a web page that you save on a local drive (either your hard drive or a network drive). It contains your license number in an encrypted form. When you open the Auto Login page on your local drive you are automatically logged in to the Astronomy In Your Hands web site without having to enter your license number.
The purpose of an Auto Login page is to facilitate logging in a number of computers on a network. Save the Auto Login page in a shared directory. It is then possible to quickly log in any computer on the network. You do not need to circulate or remember the license number.