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QR code

QR code a key part of China’s COVID-19 response

QR code a key part of China’s COVID-19 response

Editor’s Note: In the fourth and final part of their series, Alice Wang and Ed Rowland examine how China has identified healthy people and allowed some mobility. What could have been an administrative nightmare has been solved with digital simplicity: the QR code backed by large data analysis. Part one is available here. Part two