The recently broadcasted TV series "The Name of the People" has been well received by everyone, and the old guys have gathered together to stage a wonderful and wonderful show. Everyone is guessing who is throwing the phone card into the toilet. Have you ever thought about why you should throw a small SIM card like this? How big is the power of mobile phone positioning? Communication carrier base station positioning In "The Name of the People", a mysterious character threw away the SIM card. In the following plot, it was still found that a telephone call was made from a base station near the provincial party committee and there was only one communication record. It seems that it is done more rigorously, or it can't escape the mobile phone positioning of this French network... This is the positioning through the carrier base station. As long as the SIM card is in the mobile phone, the base station with the strongest signal is automatically connected, so the location information of the mobile phone can be found by the base station positioning. This also explains why the ventilator wants to remove the card from the phone and wash it away. However, the base station positioning generally has a large error, which is 100-300 meters. There is a special base station positioning website on the Internet. You can query the location by entering the mobile phone base station number information. Mobile phone GPS module positioning In the play, Ding Yizhen mute the phone and throw it in the back seat of the car. The police did not pick up his mobile phone. He found the location of the car through the mobile phone, but found that Ding Yizhen had escaped. The precise positioning here depends on the mobile phone GPS module. Due to the large error in base station positioning, more accurate positioning requires GPS module assistance. We usually use the XX taxi, XX map, etc., using the base station + GPS co-location. Of course, GPS is limited to outdoor positioning, and indoor errors are large. Targeting via Wi-Fi In fact, you can also locate it without using a mobile phone card! When the phone turns on the Wi-Fi function, it can be accurately positioned without connecting to Wi-Fi. In the mobile operating system, there is a built-in location service. Since each WiFi hotspot has a unique Mac address, it will automatically scan nearby hotspots and upload location information when the WiFi is turned on, with an accuracy of less than 10m. Therefore, mobile phone positioning methods are varied. If you have committed something, the police can find you by mobile phone in minutes. Or learn snails as a good citizen, don't forget to buy a new card to be real-name system! best e cig,e cig vaporizer,best e cig vape,e cigaratte,vape cigratte Newmax Electronics Co.,Limited , https://www.advvape.com
