The trip code will not be recorded if you stay for a few minutes.

The trip code will be recorded if you stay more than 4 hours in the exact province or city at home, and you don't need to fill in the information to check the cities where you stayed for 4 hours at home and the countries you visited abroad in the previous 14 days.

The query is initiated by the user, and can be accessed by scanning the query page with cell phone software (WeChat, Alipay, etc.), or by searching for the communication trip card in WeChat's small program to enter the small program, entering the cell phone number and clicking on it to get the verification code, and clicking on the query after the verification has been successful, which will return the results of the query.

Communication big data itinerary card analysis of cell phone signaling data, through the user's cell phone is located in the location of the base station to obtain, to accurately locate their own driving through the track. That is, the cell phone operator has a signal where you can query where you have been, but some areas will be biased if there is a weak cell phone signal value or no signal.

The trip code record is introduced as follows:

The general ride time is only a few hours will not be judged to be stationed, as long as there is no more than 4 hours will not be anything, so we can rest assured that you take the train, high-speed rail, the plane can ride. In order to ensure continuous communication and achieve coverage without blind spots, the signals of two base stations at the junction of administrative divisions may be cross-covered.

Causing deviations in the results, the use of which can be adjusted accordingly in conjunction with other proofs. The query results show the visited provinces and cities (domestic), countries and regions (international), a **** is divided into green, yellow, red three kinds of cards, the rules will be adjusted in real time according to the actual situation.