When you are off campus, you can access Keiss Library resources using your GMercyU portal credentials. This is the same username and password that you use to access the portal and your GMercyU email. (Be sure to enter your username WITHOUT @gmercyu.edu at the end.)
If you are working in a school or a hospital, there can be a problem due to the firewalls that are set up on these networks. Some may be too restrictive to allow you to access the library's research databases.