I thought I was still Long Aotian

The next day, Yuen Long went back to school and invited Yao Chengxu and others to give simple training to the workers brought by Manager Cao.

Manager Cao received a call for complaints, and he thought it was another fake product. However, after he hung up, the fire department called again.

After detailed inquiry, Manager Cao found out that what happened this time really involved their company's products.

This is a careless nanny who forgot the unlock code and did not bring a spare key. She locked the employer’s elderly mother who was handicapped at home. Something was still cooking on the gas in the house. At this time, the gas was leaking.

The employer, his wife and children are abroad, and the firefighters planned to break the windows, but this apartment building is full of office workers, no one is at home during the day, and it takes half an hour for the residents on the upper and lower floors to be the nearest to the company.

When Yuen Long and Manager Cao arrived, the police took the regular lock unlocking company staff out of the elevator, and the lock unlocker said, "The electronic door lock is very sophisticated in design. I tried several methods, but they couldn't open it."

"The person from the electronic anti-theft door manufacturer is here, let him go and have a look." The firefighter said.

When the frustrated little brother heard this, his eyes lit up, and he planned to stay and watch the unlocking process, for fear that this kind of thing would happen again in the future, and he would not be able to open the door of death at a critical moment.

At the end of the corridor, outside the brown-red gate, the firefighters asked the nanny to evacuate first, but she refused to leave, sitting on the ground and crying, "I won't leave, I want to watch grandma be rescued, so I'll go out and throw away the trash. Oh, if she dies, I will bury her with her."

"Give way, the manufacturer is here." The firefighters who brought them up immediately set up the nanny and aunt together with their colleagues, and let the door out.

Manager Cao stepped forward to check and said in surprise: "Korma anti-theft door! This is the first intelligent anti-theft door imported by our company from abroad. It was the best and most advanced technology at that time. This door has double opening methods. There are eight When the door is normally closed, only the four locks on the side of the door will be activated. If the door is to be forcibly broken in, the sensor device inside will be activated to activate the other four mechanical locks on the upper and lower sides."

Manager Cao looked at the small button under the doorknob, shook his head and said, "The company that produced this door has closed down, and the stand-alone chip they used is the earliest batch. If the smart door lock enters the wrong password three times, it will also cause the other four mechanical locks to be activated. It is best to call other people in this company to ask.

Police: "Their family has traveled abroad, and domestic mobile phones can't be used there. The foreign temporary phone number, the nanny said she wrote it down in the notepad at home, but she didn't remember it herself."

It was a matter of life and death again. Manager Cao glanced at the crying nanny and complained: "Then I really can't help it. If I guess the password randomly, the door will be locked after three times and can only be opened with a key." gone."

The fireman shook his head: "This is impossible. Although the main gas valve on this floor has been closed, there is still a leak in the room. We cannot use equipment with an open flame to break the door. This door is covered with steel. It takes too long to break it with an axe." , I'm afraid the old lady can't wait."

Police: "Manager Cao, why don't you give it a try, it's important to save people, we can't just wait here."

Manager Cao nodded and raised his hand to press the number buttons, but he stopped when his fingertips lightly touched the metal layer on the buttons and felt the coldness.

He swallowed hard, looked at the police and firefighters, "Did I press it?"

The two parties pursed their lips and nodded: "Come on, don't you have three chances?"

Twice beeps reminded that Manager Cao's back door command was correct.

He suddenly lifted his finger from the button, rubbed his nose anxiously, and turned his eyes to the two people with disappointed eyes. "what to do?"

Everyone fell silent, even the nanny didn't dare to cry anymore.

"Let me try it." Yuen Long said.

"You?" Manager Cao asked uncertainly, "Student Yuan, you have a high degree of education and know a lot, but this is an old stand-alone chip more than ten years ago, which is different from the current programming."

Yuen Long stepped forward and knocked on the door, and said to himself, "Manager Cao, you forgot the subject I'm working on."

Manager Cao is confused, isn't Yuen Long researching the voice control system?

Everyone else turned to look at him, and one of the firefighters recognized him as the classmate who had rescued the little girl, and was immediately overjoyed.The nanny heard that there was hope, so she quickly asked softly, "Sir, do you really have a solution?"

Yuen Long: "Electronic door locks are generally a stand-alone chip composed of a programming memory and a data reading device. There is a corresponding chip on the spare key. When the key is inserted into the lock hole, the chip will release an electromagnetic signal with a password. Send it to memory so the door lock will open."

Yuen Long touched the side of the alloy control panel, and found an external control connection port, he said: "We just need to give him a correct electromagnetic signal when the key is inserted, just like voice-activated recognition, and quickly find the electromagnetic signal." Signal interval, misleading the electronic door lock system, this is the spare key."

Everyone didn't understand, Manager Cao asked: "How can I find the right electromagnetic signal?"

Yuen Long: "Use a computer to process it."

The unlocking brother understood a little bit, and he asked, "Is it the same as the high-tech unlocker in foreign movies?"

Yuen Long nodded: "Almost."

The unlocking brother said excitedly: "I have a computer, I'm close to here, I can pull it over." His computer is a desktop with a heavy monitor.

Yuen Long shook his head: "Thank you, but I'm afraid your computer is not good enough. Manager Cao, please go down and help me get the laptop I put in your car. There should be a control cable in the computer bag."

"Okay, okay." Manager Cao hurriedly pressed the elevator, and seeing that the elevator was still on the first floor, he turned around and went to the corridor.

After a while, Manager Cao came up with a computer bag, and everyone hurriedly made room for him.

Yuen Long took the computer bag, took out a brand new laptop, and pulled out the data cable, but found that the data cable was not long enough to put the computer on the ground.

The unlocking brother squeezed over and squatted in front of Yuen Long as a table, "Use my back."

Yuen Long nodded, put the computer on his back, and started typing the codes. The strings of white codes flickered in the black window. About 5 minutes later, Yuen Long directed Manager Cao to open the door with the key.

Manager Cao was sweating nervously on his forehead, but he didn't dare to delay. He hurriedly took out the key of his smart door lock, inserted it into the keyhole, and turned it gently. Only a click sounded, and the door really opened.

Everyone was stunned for a moment, and then the firefighters came back to their senses, hurriedly pushed away Manager Cao and Unlock Brother and rushed in to rescue people.

The old man was a little dizzy and nauseous, but he was still conscious. The nanny was completely relieved, and hurriedly caught up with Yuen Long who was waiting for the elevator, and kowtowed to him to thank him.

At this moment, the elevator door opened, and a young man with a briefcase came out from inside. Seeing this scene, he couldn't help but look at Yuen Long more, as if Yuen Long was some kind of monster.

Police: "Are you Mr. Shui from upstairs?"

The man nodded, "Do you still need to open the door of my house?"

The policeman smiled and pointed at Yuen Long, "No, this gentleman has already solved it for us. Thank you, Mr. Shui, for coming back. I'm really sorry for delaying your work."

"It's okay." The man looked at Yuen Long again, this time with a normal expression.

Yuen Long nodded slightly, greeted him, stepped into the elevator with Manager Cao and left.