The Covid-19 contact tracing card is now a hardware solution and being trialled in Ngongotahā.
Shayne Hunter from the Ministry of Health said the purpose of this trial was to understand how the card might work in a real world scenario, ie across the rest of New Zealand.
"Getting it in the hands of people, letting them go about their normal day or evenings, and to see whether the card would actually provide us with improvements in contact tracing," he said.
Rather than logging the wearers' every movement like a GPS, it notes other cards it comes close to. Te Arawa Covid-19 Response team member, Kirikowhai Mikaere said trust is paramount.
"The trust of our community is incredibly important to us, as is the privacy, the security and the sovereignty of the data," she said.