The digital sentry and location code, jointly developed by Dongzhou Iot and Shanghai Mobile, will be promoted in Shanghai with the application. Temperature measurement and code scanning will be one-stop and rapid verification of health information. The first 100 devices will be used in places with large traffic. Science and technology empower the fight against COVID-19, and the R&D team is further upgrading the system to customize convenient passage for the elderly. Dongzhou will do its best to make its own contribution to the early resumption of normal life and work in the city.