1, communications big data itinerary card, is by the China Academy of Information and Communication Technology, China Telecom, China Mobile, China Unicom three basic telecommunications enterprises using cell phone "signaling data", through the user's cell phone is located in the location of the base station to obtain, for the country's 1.6 billion cell phone users free query service, cell phone users can be used through the service, to query the person's own The first 14 days to all the cities and towns information.

2. The main role is to help people conveniently prove their trip, improve the efficiency of trip checking for enterprises, communities, transportation departments and other institutions, and accelerate the process of resuming work and production.

3, "communication big data trip card" based on telecommunications big data, by the three major carriers to provide a unified interface, only have to fill out the cell phone number, verification code and to confirm my authorization, do not have to fill out the ID card number, home address, do not collect other personal information, the operation of the simpler and safer, to fully protect the user's privacy.