The library uses the university's wifi.
From that page:
Guests can quickly connect to an open wireless network with access granted by verification code – no more paper forms and waiting for permission.
Simply click on Guest Access and follow the steps. Guess Access is good for seven days without having to re-certify.
Students, Faculty and Staff can use their EagleID Credentials to obtain access to a safer, more secure, encrypted network. Students, Faculty and Staff access is good for one year without having to re-certify.