He also called for the creation of mechanisms that would simplify the “orderly flow” of people in the coronavirus-battered world. They could come in the form of QR codes containing people’s health information, Xi said.

QR codes of this type are already in active use in China, where internal travel has become largely dependent on them and the corresponding “health apps.” Instruments to track people’s movement, including mobile applications and QR codes, have been implemented amid the coronavirus pandemic by other nations as well, though no global system has emerged yet.



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