The asterisk in the trip code is not a cause for complaint. The asterisk in the trip code indicates that the city that the user visited in the previous 14 days is currently in a medium- or high-risk area, and does not indicate that the user has actually visited these medium- or high-risk areas. The markers are used as travel alerts only and are not associated with health status. Typically, after 14 days, it will automatically update on day 15 and the asterisk on the trip card will automatically disappear.
Communication big data itinerary card, by the China Academy of Information and Communication Technology in conjunction with China Telecom, China Mobile, China Unicom, three basic telecommunications enterprises to use cell phone "signaling data", through the user's cell phone is located in the base station location to obtain, for the country's 1.6 billion cell phone users to provide free query service, the service can be used to check their own cell phone users. Through the service, cell phone users can inquire about the information of all the cities and municipalities they have visited in the previous 14 days. As of March 25, 2020, the cumulative query volume has exceeded 450 million times.
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 be changed to include medium- and high-risk areas in the bracketed remarks after the city name, which will only serve as a travel reminder and will not be associated with health conditions. March 30, the national government service platform "epidemic prevention health code" has integrated "communication big data trip card" related information, can be displayed in the health code users, whether they have been to medium and high risk areas and other trip information, help health code "The company's website has been updated with the latest information on the company's website.
August 5, the State Council Joint Prevention and Control Mechanism held a press conference, "communication itinerary card" cumulative query service of more than 12 billion times, to become an important means of prevention and control of epidemics around the world.
Users in the Baidu App directly search for "health code", the search results can be presented at the same time the user's local health code, the national government service platform "epidemic prevention and health information code". In the "epidemic prevention and health information code" page, "health code" has been integrated under the "communication big data itinerary card" information column, which can show whether the user has been to medium and high risk areas and other itinerary information. The information can be used to display whether the user has traveled to a medium- or high-risk area.
The query results show the provinces and cities visited (domestic), countries and regions (international), -*** is divided into three kinds of cards: green, yellow and red, and the rules will be adjusted in real time according to the actual situation. Users within the first 14 days.
The trip calculation is done in the operator's back office, and the results have a -day delay, for example, on March 5 the calculation is for trip data within 14 days before March 4 (between February 20 and March 4). In addition, because the service uses base station data, in order to ensure continuous communication and achieve coverage without blind spots, the signals of the two base stations at the junction of the administrative divisions may be cross-covered, resulting in deviation of the results, which can be adjusted accordingly when using the service in conjunction with other proofs.