If you unplug your SIM card, turn off your phone and use a non-smartphone, the trip code will not know your whereabouts?

Whether you unplug your SIM card or turn off your phone, or use a non-smartphone, as long as you carry your phone with you, the operator can use the big data of the Avatar, in a short period of time to find out your action trajectory. The trip code will not know your whereabouts if you unplug your SIM card, turn it off, or use a non-smartphone. Whether you unplug your SIM card or turn off your phone, or use a non-smartphone, as long as you carry your phone with you, the operator can use the big data of the Avatar, in a short period of time to find out your action trajectory. So it seems that the operator is like a shadow, all your trips, it knows everything. How powerful is big data? You may also have doubts, when you use your cell phone to see something, and then open the shopping app, these APPs will recommend the things you just saw first. For example, if you have stayed on a food video, then the next video will continue to be recommended to you. This is the use of big data, which is based on the APP on your behavior habits, detection and analysis, in order to better cater to you. In fact, the operator's big data "precise positioning" is more advanced. It can realize user differentiation, capture the information of websites or APPs we have visited, and even the amount of traffic consumed is clear. At the same time, our daily calls, information exchange, call duration, terminal preferences and consumption data can be obtained by the operators. After capturing these data, operators can analyze your age, gender, marriage, location, cell phone brand and other information, which shows that people have no privacy under big data. What does the travel code rely on to know your whereabouts? 1、Base station positioning Base station, abbreviated as BS, refers to the public mobile communication base station, as the name suggests, the base station is to provide signals to the cell phone, as long as our cell phone has a signal, the base station is like air, always full of our surroundings. We can also see that on different occasions, the strength of the cell phone signal varies, which is due to the fixed radiation distance of the base station. At present, the base stations built by the three major carriers basically cover the whole country. When we move with our cell phones, the base stations we access will keep changing, just like the B base station with super strong signal steals the business from the A base station with weaker signal. In any case, both A and B base stations will receive the cell phone signal parameters, and then through a series of professional code analysis, you can determine the location of the phone. The base station is the most basic and the main way to locate the phone, trip code (communication data trip card) to know where you have been, mainly because of its credit. 2, wireless network positioning We commonly use wireless routers, which is equivalent to a smaller version of the base station, and each router has a unique MAC address, when the phone is successfully connected, the phone's location information will be fed back to the router terminal system. For example, you always feel the slow speed of your own wireless network, you can ask professionals to help you analyze the data, you can find who is stealing your home Wi-Fi, and can pull him into the black list from the terminal, after which he can no longer connect to your home Wi-Fi. 3、GPS positioning Cell phones generally have location information services, such as maps, location information, navigation functions. These are connected to the satellite navigation system in the sky, as long as the satellite is still in the sky, will certainly leave the location information. Base station and wireless positioning is to find out the range you are in, there is a certain position deviation, while GPS positioning is very accurate, the error will not exceed 15 meters. When I was a kid, I used to watch TV with a satellite pot search signal, which is GPS positioning. 4、Internal positioning A person bought the same model of two cell phones, thought it was exactly the same, but in fact it is not, just like twins, they have their own identity cards. And each cell phone in the factory, was also given an "identity card". This is the phone's IMEI number identification code, the identification code is mainly IMEI, MEID or S/N composition, to achieve accurate differentiation, it can be detected by the base station, through the base station data analysis, you can form your mobile trajectory. Interested partners can try it by using the phone dialing key to enter <*#06#>, you can see the unique identification code of your own phone. Thus, even if you unplug your SIM card or turn off your phone, you only escape the base station signal positioning, wireless network positioning and GPS positioning, with some effort, professionals can still use the base station professional code to find your phone's IMEI number identification code, and then trace your mobile trajectory. Under what circumstances will the trip code not generate records? 1、New users who have opened an account for less than 14 days Combined with the characteristics of the epidemic, the data collected by the trip code is the data of the past 14 days, therefore, the new cell phone users who have opened an account for less than 14 days will not generate any records on the trip code because the complete 14 days of data cannot be collected. Of course, it will be available after another day. 2、Not staying in a region for more than 4 hours For example, I obviously took a bus from Nanjing to Maanshan, but there is no record of it. This is because the trip code needs to trigger the condition of staying for 4 hours when recording the travel. For example, I took a flight to Chengdu at 8am, and then took the high-speed train to Chongqing at 9am, and stayed in Chongqing for a day. If I just go to the edge of Chongqing, and the base station is in Chengdu, then the trip code will only record Chengdu, not Chongqing. 3, theoretically the user unplug the battery, while unloading the SIM card to avoid being tracked, for some can not be removed from the battery of the all-in-one machine, even if the phone is turned off is also the possibility of being tracked, simply unplug the SIM card will only improve the difficulty of being tracked. The moment the cell phone card is inserted in the phone, the cell phone default to connect to the base station signal acquisition network, so that the base station will get the phone ID information, so even if the card is unplugged, but turn on the phone, the base station will determine whether there is a SIM card. In fact, this can be achieved in theory, but in practice, it is not easy to do. After the user turns off the phone, the base station signal connected to the phone is actually able to check the location of the phone at that time. The most secure method is to dilute the phone battery, in the case of no power supply, is equivalent to cut off the connection with the outside world, but in view of the vast majority of the current market cell phone battery is not removable, therefore, the operation is quite inconvenient. Under what circumstances will the trip code record deviations? The trip code mainly relies on the cell phone, if the signal base station coverage is not available, the owner's own defects and other reasons, may also cause the trip code deviation. 1. The trip code is recorded without staying for more than 4 hours It's like the edge of Chongqing, which was raised above, is recorded in Chengdu, whose base station signal is stronger than Chongqing's! In the case of cross-coverage of base stations, the mobile phone will receive a stronger signal from the base station. 2、People in the country, but record themselves going abroad The tiger also has a nap, not to mention the operators facing more than a billion customers. Data shows that as of December 2021, China's cell phone users are up to more than 1.6 billion households, and each household may have access to the trip code, in such a huge data analysis, the operator's server will also have sporadic failure. When the base station data disorder, it can transmit the wrong trip code, for example, people in Yunnan, but the trip code appears the word Vietnam. This phenomenon is mostly caused by the temporary failure of the base station signal and the operator's system. 3、People have not been to the medium and high risk areas, but the trip code has an asterisk After all, the trip code can only locate municipal cities, for example, I have only been to Leshan City in 14 days, but not to Emeishan City (Emeishan City is a county-level city under the jurisdiction of Leshan City), if Emeishan City is a medium-high risk area, then the "*" symbol will appear after Leshan City on the trip code. It is impossible for the epidemic to spread that far and for me to be isolated. As long as I report the epidemic truthfully, the asterisk will disappear on its own when Emeishan City becomes a low-risk area. Or if I leave Leshan and go to Chengdu, the asterisk on my itinerary code will disappear after 14 days. If the asterisk is still there after 14 days, I can still call my cell phone provider to make adjustments. How do I know the trip code if I don't have a smartphone? If you don't have a smartphone, you can send a text message "CXMYD#4 digits of your ID card" to your carrier for inquiry (to: Telecom 10001, Mobile 10086, Unicom 10010). If you are not using a personal ID card, but you are using it, you can send "CXMYD#the last 4 digits of the corresponding valid registration document of the machine" for inquiry. It seems that even if you are using a non-smartphone, as long as you carry your phone with you, the operator can use the big data to find out your movement traces in a short time. The actual fact is that the actual person is not only the actual person, but also the actual person. The other is the elderly keypad machine, generally using the base station positioning, if you meet the program master, can also easily adjust the mobile trajectory. In fact, with the in-depth work of prevention, it now supports the generation of application and query health code. If an elderly person over 60 years old or a child under 16 years old travels alone, he or she can ask a passerby to help him or her with the inquiry. The passerby can simply enter the ID number of the elderly person or child on the relevant page of Alipay for the health information code for epidemic prevention, and the health code will be displayed for 10 seconds. In addition, some cities and regions also support swiping ID cards (e.g. Zhejiang) and citizen cards (e.g. Hangzhou) on some reading devices to make inquiries.