Sainsbury's branch halts AI use as shopper ejected

Sainsbury's has temporarily halted the use of live facial recognition technology at a London store following an incident where a customer was incorrectly identified as a shoplifter and asked to leave. The 46-year-old shopper, Matt Arnold, was approached by staff at the East Dulwich branch while purchasing items and was asked to exit the premises.

Sainsbury's claimed the error was due to human error, but critics argue the incident highlights the risks of retail surveillance technology humiliating customers and relying on automated alerts instead of human judgment. The supermarket said it had apologized to Arnold and that the technology, provided by Facewatch, has a 99.98% accuracy rate, with alerts reviewed by trained managers.

Facewatch defended the technology, stating that the 0.02% margin of error is a precautionary measure to prevent false alerts. Sainsbury's cited rising violence against retail workers as a reason to implement the system, which they claimed resulted in a 46% reduction in theft and anti-social behaviour at trial stores. However, civil liberties advocates have called for the technology's removal, warning of the potential for serious mistakes when conducting widespread ID checks.