Just when Bai Xiaofan dialed out the phone number, Fan Tang began a full range of positioning operations.

Mobile phone positioning is generally divided into two methods, one is GPS positioning, and the other is to use the base station of the mobile operation network for positioning. Using GPS positioning, it is the fastest and most accurate of the two types of positioning. However, because Tang Shiji's family background is relatively ordinary, and today's smart phones are just emerging, it is impossible for Tang Shiji to buy this kind of advanced mobile phone that is still tall today.

Therefore, when positioning, only the base station of the mobile operation network can be used for positioning. Relatively speaking, it is slightly more technically difficult......

On TV, we've all seen such an episode. That is, when it comes to positioning, it takes no less than two minutes......

In real life, if you want to locate a mobile phone, the difficulty and complexity are actually much more complicated than those on TV. Base station positioning, you need to switch at least three different base station information to confirm the location of the other party......

When you make a phone call, you can only confirm the straight-line distance between the mobile phone and the base station, but you can't confirm the direction of the mobile phone, which direction is in the east, west, north and south? In the second positioning, a triangle was formed between the two base stations and the mobile phone. However, because this triangle only has two points fixed and the other point can still be moved, it is still impossible to confirm the exact position of the phone. Only after three positioning, a stable triangle is formed between the three base stations, and the mobile phone user and any two base stations also form a triangle, can the location of the mobile phone be locked most accurately......

However, fortunately, Bai Xiaofan himself is an expert in network construction, with intermediate artificial intelligence as technical support, and supercomputing as computing......

And it doesn't take two minutes to make a phone call!

It only takes 30 seconds for him to quickly switch the base station for positioning......

It didn't take long for Tang Shiji to pick up the phone. Time passed minute by minute, and Bai Xiaofan chatted with Tang Shiji.

On the monitor, the first thing that appeared was the map of Shenzhou, and as Tang Fatzi's phone was connected, on the calm map, it was as if a stone had been thrown into the water, and circles of blue ripples continued to spread, and then a red area suddenly covered the entire map of the capital. At the same time, the map on the monitor continued to expand, and a thumb-sized map of the capital suddenly covered the entire display. As the second blue dot ripple spread, the red area shrank, and if you look closely, the red area at this time is less than 1/4 of the entire capital. And when the third blue dot ripple began to spread, the original red area suddenly became a red dot!

Then, the red dot suddenly zoomed in, and a specific geographical location appeared on the display.

"303 West Ring Road, South Lake Bar!" Looking at the address on the computer, Bai Xiaofan's eyes suddenly sharpened......

Bai Xiaofan used Fan Tang to retrieve the environment around the Nanhu Bar, and all the surveillance cameras at each intersection appeared on the map.

And what makes Bai Xiaofan feel interesting is that there is also a camera in the interior of Nanhu Bar. In Bai Xiaofan's mind, it is impossible to install a camera inside the bar in a black shop like Nanhu Bar no matter what.

After all, what they are doing, once exposed, has unimaginable consequences. However, they actually installed cameras inside the bar, which is a bit confusing......

For this question, Bai Xiaofan didn't think deeply. He sent an instruction to try to crack the surveillance system of the South Lake Bar......

Because of the monitoring system of Nanhu Bar, which was connected to the computer host, Bai Xiaofan was able to retrieve the camera, and this also affected Bai Xiaofan's invasion.

The deployment of the monitoring system supporting the computer network is still a relatively advanced technology in today's era. As long as you have a computer, you can monitor it over the network. The owner of Nanhu Bar may have made such a network monitoring system for this purpose!

With the issuance of the order, Bai Xiaofan quietly cracked the monitoring of the Nanhu Bar. This kind of networked monitoring system, for Bai Xiaofan, basically has no defense.

With a few codes entered, the pictures in the three surveillance cameras of Nanhu Bar suddenly appeared in front of Bai Xiaofan's eyes!

In the picture, I saw four tattooed young men with bare arms, surrounding a fat man. And the fat man, holding a phone in his hand, seemed to be on the phone......

Looking at the picture on the monitor, looking at the mouth shape of some people's words, and the occasional intermittent voice on Tang Fatzi's phone, he was even confused, but he also knew what the other party was talking about......

I saw that a burly middle-aged man with a full face looked at Tang Shiji, and the corners of his mouth moved and said, "Boy, three minutes have passed now." I advise you to call your friend quickly and ask him to hurry up and send money over. Otherwise, you will have to suffer. Since our Nanhu Bar opened, no one has ever dared to eat overlord meals......"

Tang Fatzi cried and trembled a little when he spoke, as if he had never experienced this kind of battle since he was a child.

"Big brother, I'm me, my friend has already transferred the money......"

"Third child, you go and bring the credit card machine...... the burly middle-aged man heard Tang Fat Man say this, and then said to the waiter next to him.

After hearing this, the waiter ran to the front desk, took the POS machine and handed it to the burly middle-aged man......

Then, the burly middle-aged man entered the amount of 3,000 yuan on the POS machine, and then picked up Tang Shiji's bank card to swipe it.

"How many passwords?" The burly man didn't care what Tang Shiji's reaction was, and he didn't let him enter the password, but asked for the password directly......

Tang Shiji wanted to enter the password by himself, but he was slapped in the back of the head by a yellow hair, staggering him.

"Big brother asked you for the password, don't you know how to speak?"

From the surveillance, you can see. After Tang Shiji stabilized his figure, the fists of his hands were already clenched. It seems that he is also aggrieved......

Seeing this, Bai Xiaofan's heart was pinched. If Tang Fat Man couldn't help it and started to work with the other party, he was worried about the fat man's safety......

After all, there are many people on the other side. Once you start to move, the fat man who is lonely and lonely will definitely not be able to hold up the four fists with his hands......

Fortunately, the fat man's clenched fist finally slowly let go and reported the password of his bank card!

Seeing this, Bai Xiaofan, who originally hated to kill the Nanhu Bar immediately, gradually calmed down!

In this field, sooner or later he will have to get it back for the fat man.

It's just that now is not the time.

The dragons and snakes in the capital are mixed, and they all say that if a brick falls from the sky, there is an eighty percent chance of smashing a middle-level official! Since the other party dares to be so lawless in the capital, God knows if some brain-dead second generation is acting as a traitor......

(End of chapter)