By providing location authorization to the application app, you can enjoy the corresponding services. Generally, users will be asked when obtaining location authorization to ensure that users know where each location is used.
However, considering that some applications will gain the location right privately, publish nearby advertisements according to the user's location information, and so on. Another situation is to go to a new place, and then the local department will send a text message to remind users of the precautions, which is also a location application service.
However, many people are unwilling to provide location information, so some people will come up with a way to unplug the SIM card and turn off the mobile phone to isolate the location. But can you really isolate the location? Actually, I can't. Big data can also find my personal whereabouts.
Everyone with a mobile phone device can be regarded as a "locator". In order to obtain the user's personal location information, there are three ways to obtain the user's geographical location besides actively providing authorization. It is useless to unplug the SIM card, turn off the mobile phone or even turn off the data traffic.
Only by better understanding the positioning mode can we use our own location information reasonably and ensure that it plays a key role at the necessary moment. There are many ways of positioning, but they are all inseparable from these three.
The first type: GPS positioning
GPS, also called Global Positioning System, is pre-installed on everyone's mobile phone. Through the connection between GPS and satellites on the earth, it provides users with high-precision and all-weather positioning services. It is widely used in navigation, ranging and rescue. Because it is installed on the mobile phone by hardware, it will be located unless the mobile phone is thrown away or the GPS function is turned off.
It is worth mentioning that China's Beidou also has corresponding functions. Now everyone's mobile phones not only have GPS, but also Beidou. With the support of Beidou, you can enjoy better and more accurate positioning services.
The second type: base station positioning.
Base station location is also a common location method. As long as the user is within the signal range of the base station, he can be informed of his position. The location is mainly calculated by the communication time difference between the base station and the mobile phone, and of course it is only the approximate location. You can't know exactly which intersection and street it is.
The application of base station positioning is to provide communication services for users. Some people have bags in the province and will be recognized once they leave the province. At this time, users use traffic outside the province, so it is difficult to ensure that the data traffic is excessive. Those who think that they will not be identified for the package in the province do not know that their location information has been identified by the base station outside the province.
The third type: wireless WiFi positioning
Compared with the above two kinds, wireless WiFi positioning may be used less, and the objects that need location services are generally only service providers. Its positioning principle is also very simple, using the unique MAC address of each WiFi to collect the surrounding AP signals.
Whether WiFi is encrypted or not, you can get the MAC address in the AP signal broadcast and feed it back to the location server.
But the location is not necessarily fixed, because you can install the same WiFi in different places and the same MAC address in different places. Therefore, the location server will update the data every once in a while to ensure the accuracy of location information.
Through the above three ways, you can get a person's location information. In today's society, it is almost impossible to completely leave the position. Even if the SIM card is pulled out and the mobile phone is turned off, the positioning information can still be transmitted to the outside world.
When we enjoy some services such as take-away, taxi, navigation and surfing the Internet, we should provide positioning. Rational use of location function can make us better integrate into life, but at the same time, we should pay attention to prevention to avoid unnecessary losses caused by people who are interested in using location information.
Especially when using the unknown risk APP, be careful to ask for permissions unrelated to the application service at will. Let people who have the heart use it.
What do you think of these positioning methods?