Your CatID  is used for remote access into licensed library resources.
To search the library's licensed resources from your home or work computer, you need to be a currently enrolled UNI student, faculty or staff member. From the Library's website  when you click on any link to a licensed database, ejournal, or ebook, you should be taken to the university CatID login screen. If you don't use the Library's website to get to different resources, you may be taken to a vendor's website where UNI's CatID system is not recognized.
Example of the CatID Login Page