"From the prosperity of the business and population density here, there are at least tens of thousands of people within a 500-meter range, or even tens of thousands of people."

"In six hours, it was not easy for me to just check everyone in these buildings, not to mention that the abortion was moving, and there was still the possibility of staggering the gap."

"So, I want to find Yuan Heng within six hours unless it is a big fortune." Li Zhou said.

Take a chance?

Zhang Kun shook his head. It would be too irresponsible to put all the results in luck in this kind of thing.

As if he noticed Zhang Kun’s thoughts, Li Zhou also nodded.

"I also think it's not advisable to find Yuan Heng by relying so much on the big fortune. So we can try to think of another way."

Zhang Kun looked at Li Zhou: "What do you think?"

Li Zhou nodded. He did have some thoughts, so Li Zhou said.

"Actually, there are many ways to position. I read it at the WeChat headquarters yesterday. Their backend uses a very old-fashioned positioning method, IP positioning."

"IP positioning is simple and fast, but one disadvantage is that it is not accurate enough, so Zhang Long said that it is within a range of 500 meters."

"But there is another way to position the accuracy that can control the accuracy within fifty meters, or even twenty meters."

"What method?" Zhang Kun asked typing on WeChat on his mobile phone.

“Wifi location.”

"Every wireless router has a world-wide unique Mac address, and then any mobile client, as long as the wifi on the device is open, no matter whether it is connected or not, as long as the wifi signal can be searched, the mobile device will burn the router's mac."

"Then, let's assume that Yuan Heng's mobile phone is connected with a wifi connection, then we can easily find his exact location as long as we find a way to get the mac address in Yuan Heng's mobile phone."

"Usually, it will not exceed twenty meters, up to fifty meters. No router can spread the signal beyond fifty meters."

"You think, now everyone is used to using smartphones. Basically, when there is wifi, everyone will give priority to connecting to wifi. So, let's assume that Yuan Heng is the same. This probability is better than our great fortune." Li Zhou explained the principle and said.

Zhang Kun probably understood a little, but there was still a problem.

"How can we get the mac in Yuan Heng's mobile phone?"

"It's very simple, do you know the WeChat mini program?" Li Zhou asked.

Zhang Kun nodded.

"Many WeChat mini programs are actually the same as WeChat. If you want to use it, you must give it some authorization, such as positioning."

"If we find a way to send a mini program to Yuan Heng, let him click in, and then give us a positioning authorization, we just need to set the positioning method of the mini program in advance to wifi positioning, and we can get the mac address in his mobile phone."

It is not difficult to send a mini program to Yuan Heng. Just send it through Du Xuezhen’s mobile phone, and then you can deceive yourself in appropriate language and let Yuan Heng click in.

"But, where can we find WeChat mini-programs?" Zhang Kun asked by typing on WeChat.

There is no one he knows in Dongguan. For a moment, where can I find a WeChat mini program?

"Do it yourself." Li Zhou said naturally.

"You can?" Zhang Kun asked.

Li Zhou nodded: "Yes, I will."

"What do you mean is that you are guiding me to do it?" Zhang Kun thought for a while, then typed and asked.

Li Zhou nodded: "Yes, I can't do it even if I want to."

Zhang Kun nodded thoughtfully, and then asked again: "Is it difficult?"

Li Zhou replied decisively: "It's not difficult, it should even be said to be very simple. After all, we don't need to make a complete WeChat mini program. We just need to make an empty shell and set it to accept positioning information. I'll teach you how to do it. It should be done in one hour or at most two hours."

"Sure, what do we need to make this WeChat mini program?" Zhang Kun asked typing.

"One computer, several software, javascript, htm, l, css."

Zhang Kun understood the computer, but Zhang Kun didn't understand the following words very well.

But it's okay, it's something related to computers.

So Zhang Kun opened the mobile phone map and looked for the nearest computer product store nearby.

Very good, there is one two hundred meters away.

So Zhang Kun followed the path given by the map navigation and ordered Chen Zhou to drive.

Two minutes later, Audi car arrived in front of a "Blue Sky Computer City" store. Zhang Kun asked Chen Zhou and Ding Shaofeng to wait in the car, got out of the car alone and walked into the store.

Fifteen minutes later, when Zhang Kun walked out again, he had an extra laptop on his hand.

Moreover, the javascript, htm, l and css software that Li Zhou just mentioned has been installed on the computer.

After getting on the bus, Zhang Kun asked Chen Zhou to drive the bus to a place with few people. Then, Li Zhou began to guide Zhang Kun to create a WeChat mini program.

"Yes, this way, press this and then enter the symbol slash, which is a slash, not a comma. Press here first, then press the question mark that key, and then enter..."

Inside the Audi car, Zhang Kun placed his notebook on his legs, and then followed Li Zhou's guidance to create a WeChat mini program quietly.

However, this quietness did not last long.

Twenty minutes later, Li Zhouyi looked at Zhang Kun with a bitter face and said, "Master Zhang, have you never used a computer before?"

Zhang Kun also took out his mobile phone WeChat with sweating on his forehead and typed it: "I used it, but I used it less. I am not very familiar with computers. You can treat me as a computer novices."

Computer novices? Computer idiots.

Li Zhou couldn't help but complain in his heart that computer novices at least have no problem in operating. Many computer novices even typing on keyboards and playing games.

You are not much different from a computer idiot.

"Did I write something wrong?" Zhang Kun asked again.

Li Zhou smiled bitterly and shook his head: "It's right, but the speed is too slow. Originally, I guess we can make an empty shell for a mini program, one hour or two hours, but now our progress is probably not necessarily done in four or five hours."

Too slow?

Zhang Kun really has no choice. He has always been slow to type.

Zhang Kun was about to open his mouth and say something, but Li Zhou sighed softly and said, "Forget it, keep doing it, let's take your time. Maybe you are used to typing later, and the speed will be faster."

But Zhang Kun still frowned slightly.

Will the speed be faster? Zhang Kun is very skeptical about this.

He knows his computer skills very well.

But now it's almost a little while, four or five hours, and it's almost five or six o'clock when it's finished.

And when it was six o'clock, if Du Xuezhen did not send her password to report her safety, maybe Yuan Heng would escape again.

If you want to catch Yuan Heng later, it really depends on luck.

Zhang Kun frowned.
Chapter completed!