How does travel itinerary Code know where you have been?

The trip code is to judge which city base station you have contacted by analyzing the signaling data and bill data of the mobile phone.

The purpose of launching this itinerary code is to master the formation of the broad masses of the people, so as to judge whether they have been to the epidemic or contacted high-risk groups. Through the travel itinerary code, it can be found in time that the hidden relevant personnel have not been reported, and then relevant necessary measures can be taken according to data collection, which is more conducive to epidemic prevention and control.

First, what is this?

At present, the urbanization rate in China is very high. Base stations in first-and second-tier cities have achieved full coverage, especially in third-and fourth-tier cities. In the process of using your mobile phone, all your mobile phone operations will be recorded by the base station. Whether you make a phone call, send a text message, send a WeChat message or scan the code to buy things online, the operator will know where you have been, where you have been and what you have done. These data will be automatically uploaded to the travel code system.

Second, the way trip code works.

For example, Xiao Ming stayed in a certain place in Shaanxi for seven days and received signals from three or four base stations. The signals of these three base stations are 123456 and 6 789 10 respectively, so that when he scans the code, his QR code will be automatically connected to his travel code.

It's easier if you just need to know your starting city. As long as you check the access of the mobile phone card, you can know the city you have been to and the length of your stay.

Third, my views on this matter.

It's been three years since the epidemic. Compared with the increase in the number of infected people abroad, China has done a good job in epidemic prevention and control, but it is still completely eliminated.

We need to wait for the virus fatality rate to drop to a suitable number, such as 0. 1% of influenza, or we should establish a virus mortality rate similar to? Green light, red light stop? The current health code is actually a similar product, so what we can do now is to cooperate with epidemic prevention as much as possible, and let go when the number of people drops to a certain extent.