Chinese President Xi Jinping has called for a “global mechanism” that would use QR codes to open up international travel.
He said the codes could be used to recognise “health certificates based on nucleic acid test results”, according to a transcript published by Chinese state news agency Xinhua.
“We need to further harmonise policies and standards and establish ‘fast tracks’ to facilitate the orderly flow of people,” he said.
“We hope more countries will join this mechanism,” Xi added.
The Chinese city of Hangzhou has said it plans to make a permanent version of the QR code-based software, which would be used to assign citizens a personal score based on their medical history, health check-ups and lifestyle habits.
QR codes have been used differently elsewhere.
In Singapore and Australia, for example, they’re used for contract tracing, with residents using them to check into and out of places they visit, including malls, restaurants and their places of work.