When you enter your username and password you 'Sign In.' This allows you to view subscriber-only content.

If you use a computer that others have access to, we strongly recommend that you sign out when you are done using APT Online. If you do not, then others can click on Change Password and take over your subscription.

It is quite likely that you do not want this to happen, so we recommend that you sign out once you are finished using APT Online. For the length of your subscription, you can always sign back in and view subscriber-only content whenever you wish.