Eduroam is the world-wide roaming access service developed for the international research and education community.
This allows students, researchers and staff from participating institutions to obtain Internet connectivity across campus and when visiting other participating institutions.
Users from other organizations use the same username, domain and password provided by their home organization.
For example, a student coming from the Vienna University of Technology will have to enter the username (in the form firstname.lastname@example.org) and password provided him by his university.
More information at www.eduroam.org