Experts fear sales of the technology also export authoritarian ideas about
biometric surveillance. The second largest exporter is the US. Face recognition technology has numerous practical applications, including unlocking
smartphones, providing authentication in apps, and finding friends in social media posts, as well as public surveillance. Use of facial recognition is rising among US police departments, and while some cities have placed restrictions on the use of the technology, there are no national standards restricting or limiting its use. Some US companies, such as Clearview AI, have developed and are exporting face recognition tools that can connect a surveillance
camera image of a person to their online identities, a use case that civil liberties groups argue invades citizen’s privacy without legal justification.

China Is the World’s Biggest Face Recognition Dealer | WIRED