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From next Tuesday everyone over the age of 12 will be required to keep a record of every "busy place or event" they've been to.
The move is to combat low levels of scanning or signing in outside of a Covid outbreak and help assist with contact tracing.
But with the big increase in information about to be gathered - what are the privacy protections in place?
That's something of concern to Dr Andrew Chen, a Research Fellow at Koi Tū: The Centre for Informed Futures, at The University of Auckland.
He's written an open letter to Covid-19 Response Minister Chris Hipkins asking for legislation to clarify that data collected for contact tracing purposes will ONLY be used for contact tracing purposes.
Photo: RNZ / Dom Thomas