Joke Collection Website - Blessing messages - Why can't Xia Lang do the Dongguan travel code?

Why can't Xia Lang do the Dongguan travel code?

Travel codes vary from place to place.

Travel code is the code of communication big data travel card, which is also equivalent to health code. China Institute of Information and Communication, together with China Telecom, China Mobile and China Unicom, used mobile phones to receive data, which was obtained through the location of the base station where the users' mobile phones were located, providing free inquiry service for the 654.38+06 billion mobile phone users nationwide. Mobile phone users can query all the city information they have been to before 654.38+04 days through this service.

When you get the travel itinerary code, the travel itinerary card will display four colors according to your nearest travel itinerary: green card, Huang Ka, orange card and red card.

The travel card analyzes the signaling data and bill data of the mobile phone (connecting 3G, 4G and 5G networks, sending and receiving short messages, answering incoming calls, making calls, etc.). ). Therefore, the premise of having trip data is that users generate these signaling and call list data in the process of using mobile phones.

The data generated by the travel card may be inaccurate if there are several situations.

1. I didn't bring my mobile phone when I traveled.

2. The phone is turned off all the time.

3. Connect to WIFI all the way during the trip, without receiving or dialing, and answer incoming calls.

4. After passing through a place, stay in one place for no more than 4 hours (feedback from users sometimes only takes two minutes, which will be displayed on travel itinerary).