full text 1902 words, reading time is about 4 minute
In the days of epidemic prevention and control,
Scan the code to reveal the code has become a must-have program for travel
Speaking of itinerary code
I believe everyone is familiar with
It is powerful and
can effectively record everyone's movement trajectory
is an important tool for epidemic prevention and fight the epidemic
↓↓↓
Many friends have been curious about how
it records the itinerary
when there is no signal, there is no record, right? Why do
sometimes cause misjudgment? Will the
trip card infringe on user privacy?
The following is a detailed explanation of the working principle of
stroke code, what is
? What is the itinerary code of
?
The itinerary code we are using now first appeared in February 2020. It is a query service launched by China Information and Communications Institute and three major operators to use mobile phones to receive data. At the beginning, I searched through SMS, and later I upgraded to scanning the code to query. Later, you can cover nationwide inquiries. How is the itinerary code located in
?
itinerary code is a public welfare itinerary query service jointly introduced by the Ministry of Industry and Information Technology and jointly launched by the China Academy of Information and Communications Technology, China Mobile, China Telecom and China Unicom . It can provide users with free domestic city certificate for staying for 4 hours in countries and regions that they have visited within the past 7 days.
So in China, as long as your phone uses a mobile phone card of mobile, Telecom or China Unicom, the signal sent by the phone will be detected by the corresponding communication company. What is the principle of
stroke code?
We all know that all the communication services used in mobile phones now use, such as making calls, text messages, and surfing the Internet, must be received through the base station to receive information. There are many base stations across the country. When we arrive at a certain location, we use our mobile phone calls and chat online. The base station will record our usage information, and the operator will know our specific location information, and these data will be uploaded to the itinerary code system. Scan the code with your mobile phone, and then log in to the itinerary with your mobile phone number, and you can record where we have been in 7 days.
If you are curious, you may have questions. This method of recording itinerary is only suitable for places with operator signal base stations. If there is no signal base station on the sea in a relatively remote mountainous area and there is no signal base station on the sea, you cannot record itinerary. Of course, this idea is fine. It is true that the base station does not have a signal and cannot determine the travel position, but at this time the second recording method is used, and records the travel through GPS positioning. GPS positioning has no direct relationship with the base station. GPS positioning mainly comes from satellites in space orbit. GPS and satellites in mobile phones are automatically connected, so that our specific location can be determined.
Every mobile phone we use has an IMEI identification code when it leaves the factory. This is the unique ID card of the mobile phone when it leaves the factory. It can be checked out by nearby base stations, and after data analysis, your movement trajectory is recorded, and then uploaded to the itinerary code system. How to query our IMEI number? You only need to enter a string of characters to query! Enter *#06# in the dialing interface to query, and all smartphone query methods are the same.
stroke code is also misjudged when
What's going on?
Although the itinerary code can accurately determine everyone's specific location, sometimes errors can occur. For example, sometimes you have been to one city but have not recorded it, but have not been to another city but have been recorded. What's going on?
Let’s first talk about what happened to be in a city, but the itinerary code did not record this situation. One very important reason why
is that the itinerary code does not mean that you will record the system when you go to every city, but is based on the 4 hours of your staying in the local area, as the judgment condition.
For example, when you go to a city to make a phone call or surf the Internet, the first time is at 12 noon, the system will record it once, and then at 4 pm, you are still surfing the Internet or surfing the Internet in the same city, and you do not connect to the base stations of other cities during this period. At this time, the system will record the second time, so as to determine that you have stayed in this city for more than 4 hours.
But if you stay in a certain city for less than 4 hours, the system will judge that you may just pass by, such as driving or taking a train, and you will not be judged to have been to this city at this time.
There is another possibility, that is, you just arrived at the periphery of a certain city, and at this time you still use the base station of the original city, so it will not be recorded.
For example, Huizhou Huiyang is very close to Shenzhen. When we went to Huiyang, we would not be judged to have been there for more than a day, because the place we went is not far from Shenzhen, and the signal is still connected to the base station in Shenzhen.
Let’s look at what happened when I didn’t go to a city but was recorded.
Currently, many netizens have reported that they are staying well in the original city, but the itinerary code shows the record of having visited a certain city, which makes many people very puzzled. There may be two situations for this embarrassing situation:
first, signal cross-over coverage.
Now, in order to enhance signals and improve communication quality, many operators will perform signal cross-coverage in two adjacent cities, which means that your mobile phone may connect to the local signal tower , and may also connect to the signal tower of adjacent cities. If the signal tower of adjacent cities is connected, it may be located in the adjacent cities.
Second, a system error occurred.
According to many netizens, there are not many abnormalities caused by signal crossing. For example, some people are obviously in Shenzhen and have never been in Shenzhen, but the itinerary code is in Inner Mongolia. This is the difference between the whole world.
So why does this happen? In fact, this is a system error, which may be more common to China Mobile users.
If you have never left the local area and are located in another place, you can verify by calling the operator's official customer service number. If the operator verifies that you have not been to a certain place, but the itinerary appears, you can ask them to delete it. Will the
trip card infringe on the user's privacy?
The answer is of course Negate
Itinerary code The country gives strict confidentiality mechanism
only used to record travel location during the epidemic
so you can use
with confidence
Source: Healthy Shaanxi Release
Edited by Hong Ru
Proofreading: Bendong
Initial review: Yingjie
Final review: Qinli
Xi'an Qujiang New District Integrated Media Center
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