Venues including museums and shopping centres have been accused of using facial recognition to collect a database of the public.
The legal officer of Big Brother Watch has described facial recognition software being used by police as “a threat to freedom”.
The officers are stationed at the Zhengzhou East high-speed rail station
There are around 10 million Muslim Uygurs, which is a Turkic ethnic group, living in the area of Xinjiang
The police trial also led to 35 false matches leading some to question the reliability of the technology