This has been reported and going on for a while.
* MIT Technology review has a story on this [1]
* Police robots in China scan all the faces they come across to identify fugitives [2]
* JD (i.e., the competitor of Alibaba which is somewhat analogous to Amazon here) You can pay for deliveries using facial recognition [3]
[1] https://www.technologyreview.com/s/603494/10-breakthrough-te...
[2] http://gbtimes.com/china/police-robot-makes-china-debut
[3] https://qz.com/1009155/chinas-second-largest-ecommerce-compa...