UK shoppers say facial-recognition alerts led to false theft accusations

A facial-recognition alert can arrive in a fraction of a second. Challenging the accusation can be far harder. In new reporting by TechRadar, UK shoppers describe being wrongly treated as thieves, removed from stores and left unsure how to clear their names. Some later brought their experiences to a meeting in Parliament.

From a face match to a shop-floor confrontation

The systems described in the investigation match faces and trigger alerts that store staff can act on. But the encounters shoppers recounted were not all straightforward cases of an algorithm confusing two people. One woman was wrongly stopped after the system identified people walking directly behind her, according to TechRadar.

Other shoppers were challenged as soon as they entered a store or when they reached the tills with a full basket. One person described mistaken identity; another saw their face flagged on an overhead screen. These differences leave a consequential question in each case: what went wrong between the system’s identification and the staff member’s response?

A man visiting Home Bargains to buy vitamins was escorted out after an alert. He told TechRadar he became scared to enter a shop. At Budgens, a woman was accused of stealing meat even though she and her husband said they had not visited that store for months. Her husband described being “shaking from head to toe.” TechRadar changed affected people’s names to protect their privacy.

Who answers for an incorrect alert?

The shoppers’ complaints reached a House of Commons meeting with Labour MP Dr Allison Gardner, sponsored by civil liberties group Big Brother Watch. The group invited facial-recognition provider Facewatch and Sainsbury’s, which TechRadar said was introducing the technology to 200 stores. Neither sent representatives.

Facewatch told TechRadar it had seriously considered attending but questioned the event’s balance because of Big Brother Watch’s campaign messaging. It said it explained its decision to the organizers and parliamentary co-chair and offered to answer questions afterward. Asked about responsibility for errors, it drew a distinction between its own work and retailers’ conduct.

takes responsibility for its technology and processes, and retailers are responsible for how their staff interact with customers

Facewatch, describing its position to TechRadar

The company said legal liability depends on each case’s facts. It also said false alerts trigger a safeguarding process with the retailer to establish what happened. Facewatch challenged the suggestion that these incidents represent everyday risk, saying its systems operate successfully in thousands of UK stores and describing the incidents as exceptional.

Booker Group, which owns the Budgens brand, declined to comment on the record. Home Bargains and Sainsbury’s did not respond to TechRadar. Gardner questioned whether individual cases involved an algorithm fault, a staff mistake or another cause; the meeting produced no answers to those specifics.

Seeking an explanation means sharing more data

TechRadar also visited a South London Sainsbury’s and found no viable way to opt out of facial recognition. Security staff had little information about how it worked. Store entrances carried signs with QR codes, but meeting attendees said those signs offered insufficient information when they needed to challenge an accusation.

One route is a Subject Access Request, a legal mechanism for obtaining personal data a company holds. Big Brother Watch helps affected shoppers navigate these requests. But TechRadar describes a slow process that requires more personal information and does not guarantee removal from a watchlist.

TechRadar’s guidance for affected shoppers

• Record the time, date and store, and ask which facial-recognition provider it uses.
• Request your data from both the retailer and provider, and seek correction or erasure of inaccurate information.
• If they refuse to cooperate, complain to the Information Commissioner’s Office.

The Information Commissioner’s Office called the testimonies “harrowing” and said it hoped to share more concrete insights into commercial facial recognition soon. Gardner told TechRadar she would raise her concerns with ministers and contact companies directly, seeking answers about accountability and redress proportionate to the upset caused.