Surveillance firms in China (and gov't) are already deploying a prototype of the thing you described [1][2]. No reports on how effective this system is though.

Surveillance firms in China (and gov't) are already deploying a prototype of the thing you described [1][2]. No reports on how effective this system is though. [1] http://www.xinhuanet.com/local/2020-02/06/c_1125536287.htm http://www.xinhuanet.com/local/2020-02/06/c_1125536287.htm [2] https://www.globaltimes.cn/content/1178554.shtml https://www.globaltimes.cn/content/1178554.shtml