Passengers on China's metros now can travel by scanning their face or hand – powered by WeChat, China's digital wallet.

It's convenient. The problem is
Once you are blacklisted by the Social Credit System, you can no longer use WeChat, which means you can't travel, buy food…… pic.twitter.com/kT2DXuO1Ho

— Wall Street Silver (@WallStreetSilv) August 8, 2023