The Privacy Commissioner will look into the use of facial recognition technology by three major retailers to track customers without their knowledge.

Consumer group Choice has found Bunnings, Kmart and The Good Guys are analysing CCTV to develop “face prints” of shoppers, including children, to crack down on shoplifting.

While retailers using facial recognition display signs informing customers they’re doing so, those signs are discreet, with Choice finding more than 75 per cent of Australians didn’t know the technology was being used.

Privacy Commissioner Angelene Falk told Deborah Knight they will “have a look” at the use of the technology “more closely” to ensure it follows privacy laws.

“My question would be is it a proportionate response … and how customers are made aware of this?”

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Image: Getty