What is the principle of trip code?

The working principle of the travel code is actually very simple, that is, by analyzing the signaling data and bill data of the mobile phone, we can judge which city base station we contacted.

In the process of using the mobile phone, whether talking, texting or surfing the Internet, you need to connect to the base station. The specific information of each base station, including the location and number, is clear to the operator. Once everyone goes somewhere to surf the Internet or make a phone call, they will contact the base station, and then the base station will record everyone's information.

Related introduction:

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.