The travel card will be renewed in 14 days. 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.

abstract

The results of the travel card query show that the provinces, cities (domestic), countries and regions (international) are divided into green card, Huang Ka and red card, and the rules will be adjusted in real time according to the actual situation. The user's travel calculation for the first 14 days was completed in the background of the operator, and the result was delayed by one day. For example, the travel data of the first 14 days before March 4th (between February 20th and March 4th) is calculated on March 5th.