Cf the 'Alipay Health Code' now in use in China “Green code, travel freely. Red or yellow, report immediately.” https://www.nytimes.com/2020/03/01/business/ch

Cf the 'Alipay Health Code' now in use in China “Green code, travel freely. Red or yellow, report immediately.” https://www.nytimes.com/2020/03/01/business/china-coronavirus-surveillance.html https://www.nytimes.com/2020/03/01/business/china-coronaviru...