Communication itinerary card is a kind of cell phone app, it is the use of big data to provide protection for users, so that users can clearly understand the security situation around and share their own security data.

Communication Itinerary Card is a free query service for 1.6 billion cell phone users nationwide, provided by the China Academy of Information and Communications Technology (AICT) in conjunction with the three basic telecommunication companies, China Telecom, China Mobile and China Unicom, which uses cell phone "signaling data" obtained through the location of the user's cell phone at the base station, so that the cell phone user can query all the cities and towns that the user has visited in the previous 14 days through the service.

Expanded Information

Since the data source of the location query service provided by the trip card is the cell phone signaling data, which is obtained through the location of the base station where the user's cell phone is located. In order to ensure communication continuity, realize coverage without blind zones, and provide better communication service quality, the signals of two base stations at the junction of administrative divisions may be cross-covered, resulting in deviation of the results.

This is possible if the user lives close to the city boundary, or if he or she drives long distances or takes the train. The chief also said that the trip card serves as a public service and users can use it to prove their trips.

Management, if in the process of trip checking the user's query results and the actual trip does not match the situation, it is recommended to be able to combine with the user to provide tickets, air tickets or other supporting materials, a comprehensive judgment of the results of the check.

Baidu Encyclopedia-Communications Big Data Trip Card

People's Daily Online-Communications Big Data Trip Card APP on line Users can use it to prove their trips