A supermarket in London has temporarily stopped using AI-powered facial recognition alerts after employees mistakenly ejected a man at the self-service checkout.
Here's what to know
According to The Register, employees at a Sainsbury's in East Dulwich removed Matt Arnold, a 46-year-old comedy promoter, on Aug. 6. A Facewatch alert initially flagged Arnold as someone connected to an earlier theft.
Instead of getting the routine approval he requested for alcohol at a self-checkout, Arnold told the BBC that two managers came over and refused to serve him.
"The staff member said I'd been identified by the AI, and the cameras had flagged me," Arnold said.
In a statement to The Register, 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."
Arnold's case was the second reported wrongful removal involving Sainsbury's this year, per The Register. At an Elephant and Castle store in London, the store manager told Warren Rajah to leave when responding to a Facewatch alert and later apologized for the error.
TCD Picks » Quince Spotlight
💡These best-sellers from Quince deliver affordable, sustainable luxury for all
More background
AI tools can help utilities and businesses optimize the energy grid, predict demand, and better integrate renewable power like wind and solar.
However, AI-powered systems like Facewatch — even when companies claim they are highly accurate — have been subject to growing backlash. People are concerned about their connections to misuse, security risks, and unintended social costs, including strain on local infrastructure and potentially higher utility bills.
According to The Register, Sainsbury's plans to take live facial recognition from 55 stores to as many as 200 by the end of 2026. The company has also said that 90% of people flagged by the system do not return. Other U.K. retailers that use Facewatch include Costcutter, Iceland, Spar, and Sports Direct.
What's being done?
The temporary suspension at the East Dulwich location means the store will not receive further alerts while the retailer reassesses its procedures and considers extra staff training.
For Arnold, the bigger concern is about where this kind of technology could lead. He told the BBC, "But 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."
Get TCD's free newsletters for easy tips, smart advice, and a chance to earn $5,000 toward home upgrades. To see more stories like this one, change your Google preferences here.
