In China, subway passengers are registered using biometric face and palm recognition.
You can read the rest @
https://deutsche-wirtschafts-nachrichten.de/2018/08/20/china-u-bahn-fahrgaeste-werden-per-gesichtserkennung-registriert/ [translation required]
Unless "subway crime" is a big thing in China, this probably is being done for other purposes - such as keeping track of everyone all the time.
And it's interesting that both Apple and Google (perhaps others) are going to help the Chinese build and/or control their cyber prison. You can read about it here:
... and here:
By the way, although the techies are whining about attempts to censor the Chinese, I didn't read that any of them complained when US social media companies conspired to silence the alt-right. What a bunch of hypocritical a-holes !!!