Foodstuffs North Island's facial recognition trial might have the tick of approval overall, but there's still work to do.  

The Privacy Commission's ruled the trial was compliant with the Privacy Act and was successful in reducing harmful behaviour.   

But Commissioner Michael Webster told Mike Hosking they're recommending Foodstuffs keep systems updated and review impacts of skin tone on identification accuracy.  

Webster says there are still concerns over technical bias issues due to the software coming from overseas.  

It's also made recommendations for other interested businesses. 

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