"Li Yu, Wang Hongwei, is this USB drive from you both?"

In the classroom of the literacy class, Zhou Zijun held a small USB flash drive long and asked the two boys.

"No, where did it come from?" Li Yu shook his head and asked casually.

Wang Hongwei also shook his head, and Zhou Zijun frowned and said, "What I found in my schoolbag is what I saw after I went home the day before yesterday. I thought it was yours."

"Ask other students, maybe who put it in the wrong place." Li Yu said.

Zhou Zijun indeed followed the podium and held the U-question for a while. As a result, everyone shook their heads and said they had never seen this thing. Everyone in the literacy class was blue-collar workers working. Except for Li Yu, no one owns a computer and can't use a USB flash drive.

"Then you keep it. A USB flash drive doesn't seem to be worth much." Li Yu suggested.

"It's useless for me to keep it." Zhou Zijun said. She handed the USB flash drive to Li Yu and said, "How about giving it to you, don't you say that there is a computer for your workplace?"

"Okay." Li Yu was not polite, and reached out to take it and put it in his schoolbag.

Li Yu had already bought a computer. He had a desktop computer and a laptop at home. In the office of the Medicinal Food House, there was also a computer specially designed for him to use. He is not only proficient in LOL, but also learned the application of WORD and EXCEL, and can do some simple writing work. The USB drive is something he needs to use in his daily life, and it is not worth much, so he didn't feel embarrassed to take it over.

"I'll go back and check what's in it, maybe I can find out who its owner is. If there are important documents in it, maybe they're still in a hurry." Li Yu said.

"I don't care. I've given it to you anyway." Zhou Zijun said with a giggle. After the thrilling experience the day before yesterday, her relationship with Li Yu became much more intimate and her speech became even more casual.

It was already past nine o'clock in the evening after class. Li Yu and Wang Hongwei first took Zhou Zijun on the bus, and then they each looked for the bus in their own direction. Li Yu did not take the bus home, but took the other way. Just now during class, Shen Jiaze sent him a prestige, saying that he had successfully tried a small product and asked him to go over and see, and he was taking the bus to Shen Jiaze.

The company jointly organized by Shen Jiaze and Li Yu has obtained a business license. The company's venue is in an office building called "Golden Wealth Center". Shen Jiaze is waiting for Li Yu at this time.

Li Yu got off the bus and walked towards Jincai Center, but he felt a shadow following him. He was a little careful and slowly walked into the gate of Jincai Center. The moment he entered the door, with the reflection of the electroplating door frame, he saw that a figure was indeed shaking dozens of meters behind him, and then flashed behind a cluster of trees.

Could it be that Mei Tianfu is still in dispersed and sent someone to follow him?

A thought flashed through Li Yu's mind. Seeing that the other party was not approaching, he was too lazy to pay attention. He went straight into the hall and took the elevator to the room rented by the company.

"Li Yu, are you here? Why, get out of class is so late?" Shen Jiaze came over and opened the door for him, greeting him with a smile.

"I've been delayed by taking the bus." Li Yu said as he entered the door. He looked behind him and felt relieved when he saw that the person following him did not come in.

Shen Jiaze knew that Li Yu went to a migrant worker tutoring school, and also knew that in order not to be different from his classmates, he always took the bus to commute. Compared with taking a taxi, it took more than half an hour to take the bus, so he could arrive so late.

"Brother Shen, you hurriedly called me over. What's the good thing?" Li Yu threw his schoolbag onto his desk and asked Shen Jiaze with a smile.

"Absolutely good thing." Shin Jiaze said, "I have successfully experimented with the pet tracker I told you last time. Come with me."

The site rented by the company was divided into two large pieces, one was the administrative office area, and the other was Shen Jiaze's laboratory. Li Yu followed Shen Jiaze into the laboratory and saw a few small things on the laboratory bench. It was obviously the new product that Shen Jiaze was eager to show off to him.

"Look at this." Shen Jiaze picked up a coin-sized device and said, "This is the signal transmitter. It is very small in size and weight, and may be embedded in the pet's collar. The battery is built-in and can be used for more than half a month after charging. Look at this..."

As he said that, he picked up a smaller device with a small interface like the charging port on it, saying, "This is a receiver, you can plug it into the phone and then start an APP..."

While he said, he took out his mobile phone and demonstrated to Li Yu: "On this APP, the direction and distance of your pet will be displayed. If you follow the direction indicated by the APP, you can easily find your pet."

"It's interesting." Li Yu smiled. Shen Jiaze had already talked about the idea of ​​pet tracker. In fact, this thing can not only be used to track pets, but also to the elderly and children to avoid them from accidentally getting lost. There are also electronic products with similar concepts on the market, but Shen Jiaze's design has its own uniqueness. Once successful, it should have a large market.

"Come on, let's experiment." Shen Jiaze said enthusiastically, "In this way, you hide the transmitter in a place and see how I find it for you. Remember, hide it tightly, the more hidden the better."

Without waiting for Li Yu to say anything, Shen Jiaze stuffed the transmitter into Li Yu's hand, then sat down by himself, and covered his eyes with his hands childishly to show that he would not peek.

Li Yu found it funny, but seeing Shen Jiaze was so excited, he didn't want to hit him, so he took the launcher out of the laboratory, went to the administrative office area to find a drawer and hid it in, then walked back to the door of the laboratory, and said, "Hide it, come and look for it."

"I'll see, I can find it in two minutes."

Shen Jiaze took the cell phone with the receiver plugged in and jumped out of the laboratory, saying confidently.

"Let's see, let's set the search frequency first... For example, you have 10 pet dogs, each dog has a transmitter, and their frequencies are different. Using my APP, you can only connect one receiver, and find different transmitters by scanning the frequency... The transmitter I asked you to hide just now is 2725. We scan up from the frequency 2000. Look... No, no, there is! Huh..."

Shen Jiaze, who was making tricks for Li Yu, suddenly widened his eyes. The scanning line did not point to the position of 2725 as he expected, but stopped at the position of 2560, and then flashed alternately with red and green lights. He walked two steps forward in the direction displayed on the screen and found that the pointer was pointing to the schoolbag that Li Yu threw on the table.

"Did you hide the transmitter in your schoolbag?" Shen Jiaze asked.

Li Yu smiled and said, "Brother Shen, are you afraid? I didn't put the transmitter in my schoolbag at all, and I couldn't even match the direction."

"This is impossible!" Shin Jiaze said stubbornly. He seemed quite modest and even a little weak in other matters, but it was related to his evaluation of his skills, and he could not tolerate others' contempt.

"You must have hid the transmitter in your schoolbag, and the strangest thing is, how could you change the frequency of the transmitter? Could it be that I accidentally adjusted the wrong one?" Shen Jiaze said.

Li Yu shrugged his shoulders, pulled open his schoolbag, shook everything inside on the table, and said, "If you don't believe it, check it yourself and see if I hide the transmitter."

Shen Jiaze shook his phone, then shook his head and said, "No, it's in your schoolbag, not in this pile of books."

"Schoolbag?" Li Yu was a little helpless. Of course he knew that he had not hidden the transmitter in his schoolbag. It must be something wrong with Shen Jiaze's equipment. But Shen Jiaze didn't believe it, and he had no choice. He picked up his schoolbag, shook it for a moment, and said, "There is nothing in the schoolbag, I don't believe it..."

Before he finished speaking, he heard a clatter of a small toy falling out of his schoolbag, knocked on the table, and then flicked to the ground. Shen Jiaze squatted down and picked up the thing. He only saw the red light flashing on the APP interface of his mobile phone, indicating that the signal source was in his hand.

"U disk? Why is the signal source here?" Shen Jiaze said in surprise.

"What signal source? Do you think this USB drive is a signal source?" Li Yu also recognized it. It was the USB drive Zhou Zijun gave him. He threw it into his schoolbag at that time, and almost forgot about it.

Shen Jiaze did not answer, rushed into the laboratory with the USB flash drive, unscrewed an instrument, and began to measure the signal sent by the USB flash drive. Li Yu was confused and followed in.

"Li Yu, where did this come from?"

Shen Jiaze asked Li Yu with a solemn expression.

"Picked up." Li Yu said, "It was not what I picked up, it was discovered by a classmate of mine in her schoolbag. After asking many people, she didn't know where it came from, so she gave it to me."

"There is a tracker here! It has the same principle as the tracker I designed, but the power is several times larger, and the tracking distance can reach at least 3 kilometers." Shen Jiaze said in a low voice.

"Tracker!" Li Yu was stunned, as alert as he was. How could he not think of the strange phenomenon when he got off the car just now? He asked, "Brother Shen, are you saying that someone can use this USB flash drive to track me?"

"When did you get it?" Shen Jiaze asked.

"It's tonight." Li Yu said.

"So, do you feel that you have been followed?" Shen Jiaze asked again.

Li Yu nodded heavily and said, "You are right. When I got off the car just now, I found someone was following me, but I didn't expect that they were brought by this thing... But, this thing was obviously given to me by my classmate, why did she follow me?" Mobile phone users please visit http://m.piaotian.net
Chapter completed!