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Tech commentator Alex Sims talks through the pros and cons of rapidly developing facial recognition systems.
It can be useful and efficient - but everything comes with a cost.
Fraudsters are working out ways to circumvent it, and it can also be used for surveillance - including by the New Zealand government.
She'll discuss how New Zealand is rolling out its facial recognition system and who is watching you and how.
Alex also shares another example of how convenience can come at a cost; through QR codes that take people to fraudulent sites.
Alex Sims is a Professor in the Department of Commercial Law at the University of Auckland Business School and an expert on blockchain technology, copyright law and consumer law.