Carriers can remove trip card addresses.

December 13th, 2012, from 0:00 pm onwards, the "communication trip card" officially offline. China's three major telecom carriers have all said that they will synchronize the deletion of data related to user journeys to protect the security of personal information in accordance with the law.

The "Communication Journey Card" was launched by the China Academy of Information and Communication Research (CAICR) in cooperation with China Telecom, China Mobile and China Unicom, and was launched on March 6, 2020, on the Internet.

Introduction of Communications Big Data Trip Card

Communications Big Data Trip Card is jointly launched by the China Academy of Information and Communications Technology (CIICT) and the three basic telecommunication enterprises, China Telecom, China Mobile and China Unicom, utilizing cell phone signaling data, which is obtained through the location of the user's cell phone at the base station, to provide 1.6 billion mobile phone users across the country with the most comprehensive information about their mobile phones. The service is free of charge for the 1.6 billion cell phone users across the country, and allows cell phone users to search for information on all the cities and towns they have visited in the previous 14 days.

From 20:30 on January 8, 2021, the trip card will no longer mark the names of cities and towns containing medium- and high-risk areas in red, and will change to include medium- and high-risk areas in the parentheses after the name of the city, which is only a travel reminder and is not related to health status.

March 30, according to IT news, the national government service platform "epidemic prevention health code" has integrated "communications big data trip card" related information, can be displayed in the health code users, whether they have been to the high-risk areas and other trip information, to help the health code "one code", "one code", "one code", "one code", "one code", "one code", "one code", "one code", "one code", "one code", "one code". The company's website has been updated with the latest information about the company's products and services, and is now available on the Internet.