Users can check whether they are confirmed or suspected patients in COVID-19, whether they are close contacts, whether they entered the country in the past 14 days, and the test results of nucleic acids and antibodies through the "health code".
Although the "health code" is only a two-dimensional code, it contains rich data information. In addition to containing the necessary personal basic information, there are authoritative data of relevant departments behind it. These data are compared and comprehensively judged in the background to form a "risk warning" and coded to provide the public with epidemic prevention-related information and health information.