A Beijinger traveled to Zhengzhou for a protest. But his personal QR code, used to denote his COVID-19 status, turned red, and he was taken away.

The Japanese government is considering the adoption of a similar app. Moscow has also introduced a QR code system to track movements and enforce its coronavirus lockdown.

Although the QR codes all come in the same three colors and are developed by the same companies, they are based on different Covid-19 databases set up by local authorities.

One of China’s distinct solutions to combat COVID-19 pandemic is setting up an international mechanism consisting of a QR health code as proposed by China’s top leader over the weekend.

Chinese President Xi Jinping has pushed for a global Covid-19 tracking system using QR codes, to help fast-track international travel and business during the coronavirus pandemic.

The invention and use of the health code help local authorities and enterprises monitor an epidemic situation in real time and effectively prevent and control its spread, constituting an efficient ...

A resident scans the QR code on a poster to register her personal health QR code in Hangzhou, East China's Zhejiang province, on Feb 15, 2020. [Photo/Xinhua] At a time of global pandemic when ...

QR codes menus at restaurants are experiencing a renaissance as a way to eliminate shared menus, which could spread the coronavirus between customers.