Do you need a travel code next time?

The next meeting will need a travel code. The itinerary code is a public welfare itinerary inquiry service jointly launched by China ICT Institute, China Mobile, China Telecom and China Unicom under the guidance of the Ministry of Industry and Information Technology. Can provide users with free proof that I have visited countries and regions for more than 4 hours in the past 14 days.

Characteristics of travel codes

This passage introduces the travel itinerary code in detail. First, the Ministry of Industry and Information Technology and the three major communication operators jointly launched. So in China, as long as your mobile phone uses a mobile phone card, the signal sent by your mobile phone will be detected by the corresponding communication company. The location of each base station tower is fixed, and they have a clear city ownership.

Which is from Hangzhou and which is from Shanghai, as clear as a bell. And which base station our mobile phone accesses will be located in which city, and travel itinerary code will record where you have been. Usually we travel long distances by high-speed rail or by car. Every time we pass through a province, we will receive SMS reminders from mobile phone operators. The trip code is similar to the principle of this short message.