Facial recognition technology used by the UK police is making thousands of mistakes, a new report has found. South Wales Police, London's Met and Leicestershire are all trialling automated facial recognition systems in public places to identify wanted criminals. According to police figures, the system often makes more incorrect matches than correct ones. Experts warned the technology could lead to false arrests and described it as a'dangerously inaccurate policing tool'. South Wales Police has been testing an automated facial recognition system.