Communication 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 of charge to provide the query service, the mobile phone users can use the service to check my previous 14 days to visit. Cell phone users can use the service to inquire about all the cities and municipalities that they have visited in the previous 14 days.

Communication big data trip card based on telecommunications big data, by the three major carriers to provide a unified interface, only have to fill in the cell phone number, verification code and confirm my authorization, do not have to fill in 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.