British police scanned 8,600 people's faces in London without their consent, resulting in just 1 arrest and 7 false positives

· Stats released by the UK's biggest police force show it used live facial recognition to scan the faces of 8,600 people in a busy shopping area in London last week.
· The system threw up eight alerts from the Metropolitan Police database, but only one of these was a correct identification.
· The Met Police announced early...