Sainsbury's has suspended the use of live facial recognition technology at its East Dulwich store in London after a customer was incorrectly identified as a shoplifter. The supermarket chain has apologized to the customer, attributing the incident to human error rather than a fault in the technology itself.
Incident at East Dulwich store
Matt Arnold, 46, was attempting to purchase alcohol at a self-service checkout when two members of management approached him. After he had scanned his items and used his Nectar loyalty card, Arnold was informed that the facial recognition system had flagged him in connection with an incident 'earlier in the week'.
'They came over and said I had to leave. The staff member said I'd been identified by the AI, and the cameras had flagged me,' the comedy promoter told BBC London. 'A shoplifter does not walk around with that much shopping, they don't scan it through, they don't put their Nectar card through.'
Arnold described the experience as a 'terrifying glimpse of the future', expressing concern that staff might feel compelled to follow automated alerts without applying their own judgment. He added: 'What upset me was thinking this is what the future could be – people just listen to what the machine tells them to do without thinking about the consequences.'
After being escorted from the store, Arnold noticed an overhead CCTV screen displaying his face inside a red circle. In the days following the incident, Sainsbury's head office contacted him to apologize, stating that a human error had occurred. The supermarket also confirmed it has paused the technology at the East Dulwich store while an investigation is conducted.
Company response and technology accuracy
A Sainsbury's spokesperson said: 'We have contacted Mr Arnold to apologise for his experience at our Dulwich superstore. The incident was caused by human error, not the facial recognition technology. Customers can be reassured that the Facewatch system has a 99.98% accuracy rate, and every match is reviewed by a trained manager.'
Facewatch, the technology supplier, claims a 99.8% accuracy rate and maintains that its technology was not responsible for the incident. A spokesperson for Facewatch stated: 'A correct alert was sent to the retailer, but was subsequently subject to human error in the way it was handled in store.'
Arnold, however, believes that 'there are more people than me who have been caught out by this' and that mistakes are 'going to happen' as staff are 'not being equipped to implement the AI properly'.
Previous incidents and broader concerns
This is not the first time Sainsbury's has faced criticism over its facial recognition systems. Another customer, Warren Rajah, was wrongly challenged for shoplifting following a facial recognition alert at a Sainsbury's branch in Elephant and Castle.
In June, the British Transport Police revealed that out of 330,000 commuters scanned with facial recognition cameras in London, only one person was flagged as a criminal, and that was a false alarm. Silkie Carlo, director of civil liberties group Big Brother Watch, has called on Sainsbury's to scrap the technology altogether, claiming it is 'treating customers like criminals'. She told the BBC: 'Serious mistakes like this are inevitable when a national retailer does hundreds of thousands of ID checks indiscriminately with this sinister surveillance tech.'
Metro has contacted Sainsbury's for further comment. The supermarket's decision to pause the technology at the East Dulwich store marks a temporary halt, but the broader debate over the use of facial recognition in retail settings continues.
