Sainsbury's facial recognition system misidentifies shopper Warren Rajah
Warren Rajah was wrongly identified by Sainsbury's Facewatch facial recognition system and escorted from a store in Elephant and Castle. Sainsbury's apologized, attributing the error to human review rather than the AI technology, though Rajah expressed concern about the psychological impact such misidentifications could have on vulnerable shoppers.
What happened
An innocent shopper, Warren Rajah, was misidentified by Sainsbury's facial recognition system at the Elephant and Castle store and was escorted out of the shop earlier in 2026.
Facewatch noted that the customer was not on their database and attributed the situation to human error rather than a technology failure. Sainsbury's issued an apology for the incident.
Reported impact
Warren Rajah described the ordeal as 'humiliating' and expressed concern about the mental impact on vulnerable people, asking: 'Am I supposed to walk around fearful that I might be misidentified as a criminal?'
Index analysis
The incident occurred despite Facewatch's claimed 99.98% accuracy rate and Sainsbury's stated safeguard that every alert is reviewed by real people before any action is taken.
Governance controls
Sainsbury's stated that all alerts are reviewed by people before any actions are taken, and images of shoppers who do not match are deleted instantly.
The system is designed only to identify individuals who have previously shown violent, aggressive or criminal behaviour in participating stores, with clear signage in stores where the technology is operating.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.