Because living people will emit infrared rays, this is the role of infrared sensors, and when large objects move, they will produce sound, which is the role of audio detectors. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info motion sensors and cameras are better understood.

After doing these things, Cheng Xiao spent more than one million, and during that time, he was distressed!

After installing the external sensor, Chengxiao installed the same sensor on the inside of the laboratory. Moreover, all laboratory doors are electrically driven, which means that the doors are opened or closed by a computer. The vast majority of these doors are secret doors, and it is difficult for uninformed people to find them. In some places, he has even installed stun laser weapons and ultraviolet laser weapons, which the computer will control and attack the intruder if someone tries to break in. In other places, there are clamshell traps and cages that open as soon as the system detects an unidentified person breaking in, trapping the future and sending a signal of someone intrusion to Frost Moon or Chengyu.

Then, Cheng Xiao began to think about how the system would identify him. This is also the most crucial point.

Fingerprint recognition and voiceprint recognition are definitely needed, but Chengxiao has made some improvements to these two recognition methods. Take, for example, voiceprint recognition.

In fact, this identification method has certain loopholes. If you only identify by timbre, the other person may record your voice and then unlock the voiceprint lock. For this kind of means, there are precautions.

The recognition system usually has people say the same sentence twice. If this is said by a human being, then the sound waves formed by the two sentences before and after what you say cannot be exactly the same, but if you play a recording, the sound waves formed by the two sentences before and after are exactly the same! This way, the system can tell whether it's a recording or something a human is saying. Moreover, the system developed by Cheng Xiao still needs to be coded. Let's say the system greets you and says, "Hello! Or "Good morning", "Good afternoon!" If you also answer something like "good morning", then you're on the hook and the system will make sure you're an outsider! Because the code word set by Cheng Xiao is "You have worked hard!" ”

This kind of design is very tricky, and before you know it, the system will authenticate you. If he does this, it will be difficult for the other party to crack the system, because he has no idea when and how the system will determine his identity.

Naturally, he doesn't use face recognition. It's stupid way! If the other party must enter his laboratory, then the other party only needs to go for plastic surgery to be recognized by the face shape. However, he also created his own recognition method - bone recognition!

However, due to the use of Roentgen rays (X-rays), this identification method is only activated as a last resort. Because Roentgen rays are harmful to people.

After the age of eighteen, the shape of the bones basically does not change. Unless there is a severe fracture that causes the bone to be deformed. It was by using this principle that Cheng Xiao invented this bone recognition. As long as the similarity of the bones reaches more than 96 percent, it can be recognized by the system. In the past, Chengxiao didn't let Mao Jin come here, because she was still growing, and her bones were deformed too quickly. But now, Mao Jin has grown up, and his bones have basically closed. That's why Cheng Xiao brought her here. (In fact, a girl's bones don't completely close and stop growing until they're twenty years old; Boys do not completely close up until they are twenty-two years old and stop growing. But since this change has been minimal since the age of eighteen, it is usually considered that it is closed at the age of eighteen! ）

After the hardware is installed, in the end, it is time to write this extremely large operating system. Like Flying Eagle's operating system, this operating system also uses voice control. And because there are hidden audio sensors in every room, you can give instructions to the system from anywhere.

With such a tight defense, Cheng Xiao doesn't believe that the other party can still get close to him quietly! Besides, no matter how competent a bodyguard is, he will also be negligent, but the procedure - it is difficult for such a situation to occur, and therefore, Cheng Xiao will plan to return to the laboratory with Mao Jin this time! As long as this island is on this small island, Mao Jin is safe, because no one can approach her quietly!

Now, Cheng Xiao had pushed the brocade along the winding path to the front of the house. At this time, Mao Jin saw it clearly, and saw that there were twenty or thirty chickens in the bamboo fence!

Mao Jin couldn't help but be curious: "Are they also raised by Uncle Ding?" Cheng Xiao shook his head and said with a smile: "No! They were all raised by the big brother later! Mao Jin said again: "Then if you haven't been here for more than ten days, won't they be hungry?" Cheng Xiao knew that Mao Jin had never done farm work. Because of this, she doesn't even have some common sense. Unlike him, although his family is very wealthy now, when he was young, he still used to work in the fields.

Cheng Xiao said: "Big brother planted grass in it, how can they be hungry?" Besides, it's very big, and they're going to find something to eat on their own. Besides, even if your big brother isn't here, the big brother can feed them. Mao Jin was even more surprised, she said: "Big brother, is it so magical?" Cheng Xiao bent down and whispered mysteriously in her ear: "Of course! Because Big Brother is here, there is a robot, even if Big Brother is not here, Big Brother can remotely control it to complete what Big Brother wants to accomplish! ”

"Really?" The clear eyes of the brocade are just looking at Cheng Xiao, which is full of warmth. Cheng Xiao smiled: "Of course it's true!" As he spoke, he turned on his mobile phone and started another control program, and it didn't take long for Mao Jin to hear the sound of footsteps suddenly coming from the house. Mao Jin couldn't help but look at the door curiously. I saw that a robot really came out!

It's just that this robot is too ugly too! There is only one skeleton, and the sensors and actuators are all exposed. And the transmission is still very old-fashioned.

It's just that this already makes Mao Jin very happy. She looked at the robot that came over with "gluck" and "gluck", then looked back at Cheng Xiao, and said, "Big brother, can I control it?" ”