The Digital Fence
Nowadays, smartphone app Health Kit has become a must-have “passport” for people to go anywhere in China due to the novel coronavirus disease (COVID-19). However, though the app is handy for identifying those at risk of being infected through a color-coded system, it has left some people, mostly senior citizens who are relatively new to smartphones, in an awkward situation.
Yu Bin, who works at the Temple of Heaven, a famous park in Beijing, checks the health code of every visitor at the entrance. Green means a person is healthy, whereas yellow and red respectively mean a person should self-isolate and
