What's the matter with Baoji big data to check the address?

The communication big data travel card obtains the base station position of the user's mobile phone by analyzing the signaling data of the mobile phone, and accurately locates its own driving track.

Through this service, mobile phone users can query all the city information they arrived in 14 days ago. It is determined by the base station information of the mobile phone, so your mobile phone needs to communicate with the base station to determine the itinerary. If you call from different places, you will record your location.