Now, in order to better control the epidemic, there is a travel code obtained through the mobile phone. To put it simply, it is to control the epidemic in an all-round way through positioning.
However, some netizens are curious about whether mobile phone positioning can be avoided?
Although there are often mobile phone pulling cards in film and television dramas, which can prevent the plot from being positioned, it is actually not so simple.
Many people feel that after the mobile phone is turned off, everything will be interrupted, and naturally there will be no network positioning and so on.
But do you remember the alarm clock? Even if the computer is turned off, when the time is up, the alarm will go off.
This also indirectly proves that after the mobile phone is turned off, some programs will still run. Therefore, just because the phone is turned off does not mean that all programs will stop running.
Generally speaking, mobile phones with shutdown searchable devices basically have separate chips, which are specially used for mobile phone loss lookup location.
Let's take a look at the principle of mobile phone positioning.
Under normal circumstances, the mobile phone will locate the two-way information to the surrounding base station at a frequency of milliseconds, so it is very simple to obtain the positioning information.
Even if you want to shut down to avoid positioning, when you shut down, the phone will automatically send a message to a nearby base station, telling you that "shutdown does not accept a signal."
Moreover, there are now 3 kinds of mobile phone positioning technology: GPS positioning, Wi-Fi positioning, and base station positioning!
Base station positioning has just been explained, as for GPS positioning and wifi positioning, they all rely on batteries or hardware modules and so on.
Therefore, sometimes, the mobile phone turns off the GPS location permission, etc., the possibility of being located is still relatively low.
Of course, some people say that unplugging the SIM card can avoid being positioned.
And the answer: of course not!
Because as long as your mobile phone has been connected to the base station after inserting the card, then the base station has obtained the ID information of the mobile phone, and you can find the mobile phone geographical location information through the mobile phone ID associated with the number.
So, what should be done with true anti-tracking security?
Quite simply, that's physical damage!
However, for us, even if the computer is not turned on, the operator will not force you to obtain your location information unless the police uncle invites you to tea.
Moreover, taking ten thousand steps back, if you really want to know where you are, there are many ways.