The reason why he let Ye Chen and Lang Hongjun call home first was because his car was equipped with signal shielding equipment, once the car left the city, he would turn on the shielding equipment as a way to prevent the signal base station from recording the trajectory of the two people’s mobile phones.
Because all mobile phone communications rely on ground-based base stations, and a large number of ground-based stations cross over each other to form an almost dead-end communication range in the city, the mobile phone will automatically adapt to the one with the strongest and best signal among multiple base stations, and then establish a connection with it.
As the phone moves across the area, it searches for the best base station and switches between them, so that the base station also records information about the device’s access.
If you want to use your mobile phone to track a person’s movements, all you need to do is pull up the access time and specific information about his mobile phone and the base station, and you will be able to lock in a relatively accurate roadmap and a relatively precise range.
In this way, the exact location of the criminal’s lair would be revealed.
That’s why the young man had just deliberately falsely claimed that the infrastructure in Mexico was poor, as a way of setting the stage for the next blocking of signals.
With this advance precaution, the two men would certainly not find anything unusual when they discovered that their mobile phones had no signal.
The pickup left the airport and headed south. When the car was about ten kilometres away, the young man reached under the pa*senger seat and flipped a hidden switch.
This switch was the power supply for the signal shielding equipment.
After pressing it, all signals within a five-metre radius of the car would be completely blocked, so not only could they not receive calls, they could not even receive satellite signals.
Lang Hongjun chatted with Ye Chen along the way, while using his mobile phone to chat with his wife on WeChat, but as he chatted, his mobile phone signal suddenly became no service, he was a little surprised for a moment and subconsciously said, “Aiya, no network so soon ……”
The young man casually laughed: “Why, this is too normal in Mexico, in places like Mexico, as long as you go out of the city, mobile phones basically have little signal.”
Lang Hongjun nodded gently, then put the phone down, looked out the window at the desolate desert-like landscape, and asked Ye Chen, “Older brother, did you feel the difference when you came from the United States to Mexico? Look at the wilderness out here, it’s not much different from a no-man’s land.”
Ye Chen laughed: “I’m a person with a strong adaptability. If you let me stay in a presidential suite in a five-star hotel today, I won’t feel excited, and if you let me set up a tent in the middle of nowhere tomorrow, I won’t feel uncomfortable.”
Lang Hongjun laughed, “Your kind of character is good, your kind of character is the standard happy-go-lucky, you can adapt as fast as possible wherever you go.”
“Yes.” Ye Chen nodded and smiled, “I’ve lived through everything for so many years, I dare not say I’ve seen a lot, but I can at least be spoilt for choice.”
Lang Hongjun gave a thumbs up and praised, “If only I could be as spontaneous as you.”
Saying that, his eyes glanced into the distance, and after he saw something faintly in the distant wilderness, his brow suddenly frowned.
Then, he subconsciously picked up his mobile phone and fiddled with it for a while, his expression becoming more and more grave, and even a little tense.
Ye Chen noticed Lang Hongjun’s change with his afterglow, and he also saw Lang Hongjun carefully gauging the Mexican who was driving the car, and he couldn’t help but think in his heart, “This Lang Hongjun, he couldn’t have found out anything, right?”
As he was thinking this, Lang Hongjun picked up his mobile phone and, after pressing on it for a while, handed it to Ye Chen and said with a smile, “Older brother, let me show you a picture of my son, he is very handsome.”
Ye Chen looked down and saw that there was no picture on the screen of the phone he handed over, but a line of words, “Old brother, there’s something wrong with this kid! We might have fallen for it!”