Why can't the travel code find the travel track?

It is possible that there is not enough valid data for users to stay in their mobile phones for nearly 14 days. Wechat travel code records the travel trajectory according to the roaming record of the user's mobile phone, and the user needs to record the call data of more than 4 hours in a city in the past 14 days.

solution

I suggest calling as often as possible. The earliest and latest time span in a day is more than 4 hours, which can meet the 4-hour stay and display the itinerary.

What's the difference between travel code and health code?

Nowadays, for convenience, many citizens directly put the health code on the desktop of the applet and click it directly to enter. This health code can see everyone's status and whether they have been vaccinated.

Moreover, in addition to displaying the green code, the itinerary code also shows the time when everyone enters various places here and the time when they leave, which makes the action track clearer.