Will the community check the train number?

The community will check the number of trains. ? At first, the community looked at the relevant information of big data screeners, such as the date of returning to Beijing, the number of trips, whether there was a history of living in high-risk areas, actual address, nucleic acid detection, whether it was the first time to report to Beijing for help, whether it was vaccinated with COVID-19 vaccine, etc., and maintained the data in the information collection platform system for epidemic prevention and control.

When some residents don't understand and cooperate, social workers patiently guide and explain the policies and strive to gain the understanding and support of the residents.

How did the community find the itinerary?

Does the community rely on travel itinerary and the travel itinerary found by the health code? Usually we need two codes when going out, one is the health code and the other is the travel code. The health code is used to check the health status of the body. Travel codes are used to detect where you have been. The trip code will record the area you arrived in the past 14 days. Some people will find it strange that they have never declared where they have been.

Travel itinerary code is a travel itinerary inquiry service jointly launched by the Ministry of Industry and Information Technology, China Communication Research Institute and China Telecom Mobile Unicom in February 2020. The working principle of trip code is actually very simple. In the process of using mobile phones, making phone calls, texting, surfing the Internet, etc. Are connected to the signal base station. The information of each base station is clear to the three major operators, so they can record everyone's travel information.

Sometimes you misjudge the trip code, for example, sometimes you go to a certain area, but the trip code is not recorded. Your stay in this area may be less than four hours. Because the travel itinerary code is accurate enough, staying in provinces and cities for more than 4 hours will be recorded.

Another possibility is that you have just arrived at the periphery of an area, and you are still using the base station in the original city. But with the improvement of the data, you can now track your trip in minutes.