https://thenextweb.com/world/2019/09/23/chinese-subway-stations-now-let-you-pay-for-tickets-by-scanning-your-face/

Facial recognition technology is used across China for everything from identifying criminals to measuring students’ attention in class. Now, it has debuted a system in its subway that lets you use your face as a ticket.

A report from South China Morning Post suggests the subway system in the southern city of Shenzhen has started using facial recognition technology to let folks over 60 years of age register themselves for free subway rides. Other cities such as Jinan, Shanghai, Qingdao, Nanjing, and Nanning are currently experimenting with this system.