Lets not get too excited. There were about 40 million passengers transiting NZ airports last year, according to Wikipedia.[0] The article says roughly 540 devices were searched in the same time period. That's 0.00135% or basically a dozen people per million being searched.

That hardly seems like totalitarian overreach. In fact it seems quite restrained and pretty reasonable - and presumably must be intelligence led, since I rather doubt they are doing this at random...!

0. https://en.wikipedia.org/wiki/List_of_the_busiest_airports_i...