Certain police forces in the UK are already using facial recognition. The retail sector are also using facial recognition CCTV systems to identify those that have been found to shoplift in the past. These systems will now spread, and frankly, why not?
Only those that have something to hide, or have been found guilty of crime should fear this. If we have nothing to hide, and are honest citizens, these systems can only assist us, the police and any service industries, in keeping us safe and free from crime. As a side issue, but a very important one, is that as a retired senior retail manager I know how much shoplifting / criminality on retail premises cost us, the public. Losses are transferred onto the prices we pay, and staff lose their jobs because of the costs of criminality that business has to cover, and cannot.
Welcome to the 21st century
