After living here for over 2 years we've only just visited our local farmer's market for the first time. At the entrance we saw this table with a QR code on it for people to scan, all businesses have this now in their windows so if there are any positive cases in our town they can trace it back to where people have been.
We are now in Summer so we've had some very dry days and humid nights. As of this month those who have been vaccinated will need to scan their vaccination passports if they choose to travel or enter into businesses (except essentials like supermarkets). So far for me the process downloading it online was quite easy but there are bound to be many people out there who don't have internet access so they can phone an 0800 number to get theirs posted out to them. Auckland borders will be opening for Summer and people will be driving around on holiday to different areas so those who aren't vaccinated will be in Covid's firing line except for those travelling by plane which you have to scan your passport for.