Eduroam in New Zealand is coordinated by AARNET in Australia. If your University or Institution is keen to join the Eduroam federation, then the details are available on the eduroam wiki
Eduroam stands for Education Roaming. It is a location independent wireless network and RADIUS-based infrastructure that uses 802.1X security technology to allow mobility between participants'' wireless infrastructure with seamless user authentication and the enforcement of local security policy.
It allows every staff member and student to log on to the Eduroam WLAN at another institution, who is also an eduroam participant, using the same credentials (username and password) which the user would use if he/she is at his/her home institution.