The itinerary card can display information about countries (regions) visited by the user in the past 14 days and cities in the country where the user stayed for more than four hours.

Communication big data itinerary card, by the China Institute of Information and Communication Technology in conjunction with 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 query service! The service allows cell phone users to inquire about all the cities and towns they have visited in the previous 14 days.