The Virginia Tech Libraries has licensed a small selection of databases (sources of journal articles and ebooks) for use by Virginia Tech alumni. We control access to these select licensed resources through the Alumni Library Portal Sign In service. By authenticating with your PID and password, and your second factor, the databases will recognize you as a Virginia Tech alumnus and allow access to their content.
Your PID and its corresponding password give you access to a variety of Virginia Tech resources, including access to the library's Alumni Library Portal Sign In, HokieSPA for accessing transcripts, and the Alumni Directory. The library does not manage PIDs (for alumni, current students, or faculty); you must maintain current contact information and regularly change your password.
The sign in system uses the same CAS authentication as MyVT, HokieSPA, and numerous other Virginia Tech services. There are only a few reasons it would not work for you.