An extensive report by the Center for Privacy & Technology at the Georgetown University Law Center has revealed just how extensively the technology is used by law enforcement agencies. The academics received limited information after filing official requests to police departments around the country. At least one out of four state or local police departments has the option to run face recognition searches through their or another agency’s system. There are no policies to forbid such use, and auditing of these systems for misuse is rare. There is no independent testing regime for racially biased error rates in those systems.
Source: https://www.helpnetsecurity.com/2016/10/19/facial-recognition-tech/