How to check the itinerary code instead of children?

Check the trip code instead of the child as follows:

Find the child's travel code. If the child is not very old, just follow the parents and show the adult's itinerary code directly. If the child has his own mobile phone card, you can enter the child's mobile phone number, receive the SMS verification code and query the child's bus code when querying the bus code! Preschool children generally have parents' travel codes when they enter and leave public places.

Health QR code

Communication Big Data Travel Card is a free inquiry service for 654.38+06 billion mobile phone users nationwide, which is obtained by China Xintong Institute, China Telecom, China Mobile and China Unicom by using the "signaling data" of mobile phones. Mobile phone users can query all the city information they have visited in the previous 654.38+04 days through this service.

"Communication Big Data Travel Card" analyzes "mobile phone signaling data", which is obtained through the location of the base station where the user's mobile phone is located. The collection, transmission and processing of signaling data are automatic, with strict security and privacy protection mechanisms, and the query results are available in real time, which is convenient and fast.

The data of "Communication Big Data Travel Card" can be used nationwide to achieve full coverage of a national network, and you can also check the international travel of my domestic mobile phone number. On the premise of ensuring user information security, these will provide scientific and accurate technical support for epidemic prevention and control, resumption of work and production, road traffic, entry and exit, etc.