He Chengyun uses the Alipay payment app from Alibaba. He lets the app know where he is and then gets a red, yellow or green QR code. And if he does not get a green code, that means problems, for example he is not allowed to buy vegetables in his local market.
Health apps that certify freshness are becoming more common in China
2020-03-24T20:36:33.538Z
Chinese tech giants Alibaba and Tencent were involved early in the corona crisis by the Chinese state to develop infection detection technology. Technology that is now required for citizens to prove that they are not coronas infected.
Source: svt