What is a communication travel card?

China ICT Institute, together with China Telecom, China Mobile and China Unicom, uses the "signaling data" of mobile phones,

Through the location of the base station where the user's mobile phone is located, it provides free inquiry service for 654.38+06 billion mobile phone users nationwide. Through this service, mobile phone users can query all the city information they have visited in the previous 654.38+04 days. The main function is to help you prove your itinerary conveniently, improve the efficiency of itinerary inspection in enterprises, communities, transportation departments and other institutions, and speed up the process of returning to work and production.

The communication big data travel card is based on telecom big data, and the interface is provided by the three major operators. Just fill in the mobile phone number and verification code and confirm the authorization. You don't need to fill in the ID number and home address, and you don't need to collect other personal information. The operation is simpler and safer, and the privacy of users is fully protected.

Extended data:

Since February 13, 2020, the SMS services provided by the three major operators have covered more than 200 million users.

On February 29th, 2020, SMS query was upgraded to scan code query, providing a unified web query portal. ?

On March 6th, 2020, the function of inquiring about overseas visiting places was launched on the "Communication Big Data Travel Card", which can inquire about the information of countries or regions visited by mobile phone users in the first 14 days, and find out the problems of false reports, false reports and travel information in time. ?

As of March 25, 2020, the cumulative number of inquiries has exceeded 450 million.

Baidu Encyclopedia-Communication Big Data Travel Card