Chagang? Debt dispute searching? Or vehicle mortgage, generally people use the positioning method to lock the target, the most common is the mobile phone positioning. What can we do to avoid malicious tracking?
First of all, let's understand that the mobile phone is in the power-on state and the shutdown state, what is the difference between locating the mobile phone?
In the boot state, the mobile phone will carry out two-way information positioning to the surrounding base station at a frequency of milliseconds, and if the criminals want to obtain the mobile phone positioning, the difficulty will not be very large.
In the shutdown state, the mobile phone will send a signal to tell the base station "I want to shut down", under normal circumstances, if you dial the phone to call, it will be prompted: the user you dialed has been turned off. If your phone is physically damaged, you'll be prompted that your user is not in the service area.
So, won't it be located after shutting down? The answer is no.
If you are using an Apple mobile phone, but you may not know that the NSA can continue to track the location after the target mobile phone is turned off, this is because the NSA provides an interface for future positioning by implanting a dedicated Trojan software into the target phone in advance. The NSA's approach is indeed terrifying
There is also a situation, that is, if the mobile phone card is unplugged, it cannot be tracked and located, right? Even if you don't have a mobile phone card, you can find out where the phone has been turned on by investigating the mobile phone ID associated with the number, so as to track the geographical location information.
So what can I do to avoid being targeted? Two methods, one of which is also the safest way to do it, is to remove the battery, or directly physically damage it, but this is also too expensive for the phone, right? Wallets can't hurt. The second is to interfere with the signal, wrap a few layers in tin foil, or put it in an iron box? Of course, you also refer to Snowden's approach, put the phone in the refrigerator, haha ~