The travel code is usually recorded after 4 hours, so there will be no track if it does not exceed 4 hours. If you are not in a city for more than 4 hours, you will not be recorded. The service data of "Travel Card" may be biased. Please pay attention to the use risks when using it in various places and make adjustments according to the actual situation.
The itinerary is used to help users who have returned to work prove the areas they have visited recently, so that employers and community management departments can use it when looking at the travel itinerary of migrant workers.
Preventive measures for tripping codes
The red travel code represents a city in a high-risk area. It is only a reminder, and has nothing to do with health status. Please follow the joint prevention and control mechanism of all localities for specific policies. If the green code is displayed, the bright code will pass through the city and scan the code in and out.
If red team is displayed, it needs to be in the home collection or isolated for 14 days, and it will be changed to a green code after continuous declaration of health punch 14 days. If the yellow code is displayed, it should be concentrated or isolated at home within 7 days, and it will turn into a green code after the continuous declaration of health punching is normal for no more than 7 days.
The above contents refer to Baidu Encyclopedia-Communication Big Data Travel Card.