What is a trip code?

The code of travel itinerary is "travel itinerary Card" and the official name is "Communication Big Data travel itinerary Card". Under the guidance of the Ministry of Industry and Information Technology, travel itinerary inquiry service is jointly launched by China Xintong Institute, China Telecom, China Mobile and China Unicom, which can provide users with free certificates of countries (regions) and domestic cities that I have visited in the past 14 days (now changed to 7 days).

Share with you today that we are in an epidemic period. In and out of various public places at ordinary times, you must show your travel itinerary code. How does it know where we have been one day? How long will the stay be recorded? Even if the SIM card on the mobile phone is unplugged, it will be turned off. We can't escape the tracking of the travel card. It will always truthfully record every place you have been in 14 days. How is this done? So will such a small travel itinerary code violate our personal travel itinerary privacy? Then after you have read it patiently, you will fully understand.

Travel itinerary code began to appear in February 2020. This travel itinerary code is a nationwide travel itinerary inquiry service jointly launched by China Communication Research Institute and three major service providers under the guidance of the Ministry of Industry and Information Technology of China. For the use of 654.38+06 billion mobile phone users in China, then our population is in the early stage of 654.38+04 billion. These 654.38+06 billion mobile phone users obviously represent that one person has two mobile phones, or even one person has three mobile phones. Now you need a real-name registration system to buy a SIM card of a mobile phone, so it is not difficult to match the data of the mobile phone with everyone. Because we can't go out without a mobile phone, but as long as we bring a mobile phone, it can record truthfully.

Our trip, whether open or closed, with or without the internet, can't escape the modern network. What is the ultimate principle of a travel card?

Then we all know that normal communication services of mobile phones, such as calling, texting or surfing the Internet, need to be connected to the base station. The specific information of each base station, including its location and number, is clear. Once we go somewhere to surf the Internet or make a phone call, we will contact the base station. At this time, the base station will record our information and transmit it to the data terminal to confirm our position. Of course, this method is only applicable to places with signal base stations.

If you go deep into the forest without signal, the base station identification is likely to fail. Therefore, our country has also prepared the second line of defense, that is, GPS positioning, which does not come from the base station. It comes from a satellite in space orbit, and the GPS in the mobile phone automatically connects with the satellite, so that we can locate the specific location of the user.

How long will we stay in each place before it is recorded?

Travel codes are not recorded everywhere. Although we arrived in a new city, our stay time was less than four hours, so it will not be recorded by the big data of travel itinerary. Then the system will judge that we may just be passing by. Another phenomenon is that we are located at the junction of two cities. Although we are out of the province, because the signal base station in this province is relatively strong, the attribution is still determined in the original city.

Although the travel code can accurately determine the specific location of everyone, there are also errors in the travel code. What happened?

As a new function, travel code still has some functional loopholes. For example, regional drifting, where we have never been, appears in our own travel itinerary. Then there are two possibilities for this phenomenon. One is that we are located at the junction of two cities, and as a result, the signal was robbed by the far base station, which led to the deviation of the position display.

The other is the operator's system failure. In this case, we can verify it by calling the operator's customer service phone. If the operator verifies correctly, we can ask them to delete it.

Then why do you say that even if we unplug the SIM card on the phone or turn it off? You can't escape the tracking of the travel code.

Because our mobile phone will not stop working completely after it is turned off, it will become a smart brick. Instead, it keeps a certain working state internally in case of emergency. It is at this time that the unique identification number imei of the mobile phone comes in handy. Exclusive means a mobile phone with only one hobby, which is equivalent to a person's ID card. So how do we query this imei number?

If it is an old man-machine, we only need to open the inside of the phone to see it.

What if it is a smart phone? We can enter the code "Xingjing 06 Well" through the dialing page. After the input is completed, the imei number of the mobile phone will be displayed on the screen immediately.

As long as we carry the mobile phone number, there is a way to be recognized by the relevant base stations nearby, and the generated data will be fed back to the data center, which is why the communication big data travel card app needs to obtain Bluetooth permission. Then, via Bluetooth, you can not only record the itinerary, but also record the activities of nearby mobile phones, including contact time, so as to truly complete the seamless docking of all employees.

Of course, this travel itinerary won't invade the privacy of our other mobile phones, because it doesn't have that high authority, and all it can get is the signaling data of the mobile phone. Moreover, our country has set up a strict protection mechanism to prevent this information from being stolen by others, and naturally it will not be used for private use, so it can be used with confidence.

Well, after reading it, you know something about our travel itinerary code. If you think it's good, don't forget to give me a compliment and share it with friends around you when you are free.