God people are stupid. Even with a 99.98% effectiveness rate that might translate into 16 million false accusations for large chains!
"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.' A Facewatch spokesperson said their technology was not at fault in this case. 'A correct alert was sent to the retailer, but was subsequently subject to human error in the way it was handled in store,' they said."