China’s contact tracing process, which requires citizens to scan a code upon entering public places, has evolved to include expanded definitions of close contact and cell phone tracking to combat Covid. Reports indicate the success of the government’s zero Covid policy.
Covid tracking apps have evolved from scanning codes in public places to monitoring individuals' cell phone signals to determine close contact with infected persons. Some apps have also included symptom tracking, causing the code to turn yellow if someone purchases medication for a Covid-like symptom.
The Chinese government's response to the COVID-19 pandemic was seen as effective as they locked down entire cities and instituted mass testing. The government has used their success in controlling the virus as validation for their model of governance.