As of December 14, 2021, Communications Big Data Trip Cards are accurate to the extent of the administrative division of the city. Communications Big Data Travel Card users can use the search service to look up information on all the cities and municipalities they have visited in the previous 14 days.

At the same time, from 20:30 on January 8, 2021, the trip card will no longer mark the names of cities and municipalities containing medium and high-risk areas in red, but will change to include medium and high-risk areas in the parentheses after the name of the city, which is only used as a travel reminder and is not related to health conditions.

Communication big data itinerary card use as well as development:

1, February 13, 2020 onwards, the three major carriers provide SMS query itinerary service has covered more than 200 million users.

2. On February 29, 2020, the SMS query was upgraded to a code scanning query, and a unified web query portal was provided.

3. Starting on March 6, 2020, the function of inquiring about places visited outside China was launched on the "Communications Big Data Itinerary Card", which can check information about countries or regions outside China visited by cell phone users in the previous 14 days, and can promptly detect problems of concealment, omission and inaccurate declaration of itinerary information.

4. As of March 25, 2020, the cumulative number of inquiries has exceeded 450 million.

5. In September 2021, in order to help people travel safely, the national government service platform integrated the health code and trip code into a "one-page check", so that you can open Alipay's health code and see the trip code at the same time. This means that the health code, trip code in the national comprehensive realization of a page pass type "two codes in one".

The above content reference? Baidu encyclopedia - communication big data itinerary card