How to connect Wifi at misawa ab library

This is the way to connect to wifi in misawa AB. I could connect to wifi from my phone or ipad without having any problems (just choose 'LIBRARY' and put a password 'library123456'. somehow, the system on the computer kept saying that I need to know the ID.  the library desk gave me a book that I can use to access the library. the library has fantastic broadband and connection compare to the internet we're paying for.  I wonder what makes the differences between those internet.