"Fatty, is there any difference between those substitutes and me?" Zhao Yanyan interrupted and asked. If he could tell, it would be the best.

"There is no difference on the surface for the moment." Guo Tailai smiled bitterly: "Unless it is to test DNA, the premise must be that there are original DNA samples that can be compared."

"On someone's territory, make a substitute that can be seen at a glance, can the fat man come back?" It was Mr. Zhao who could see clearly that the fat man's nursing expenses were not easy: "Even the confidant bodyguards around Wu Dai could not recognize him as a substitute. We just wanted to recognize him on TV news, which is difficult!"

"However, the appearance is exactly the same for the time being, but there are some differences in their lives and temperaments. If you study it in depth, there should be some subtle differences." Guo Tailai pointed out: "After a while, there may be a slight change in fatness and thinness, which requires regular records and careful identification. After all, they are not twins, so there are still differences in natural growth."

"Well, it's also a solution." Mr. Zhao nodded. After all, they are still two people, not twins. Even if they are exactly the same now, there will be some differences after a period of time, unless Saddam and his son can also be self-disciplined to the point where they are always synchronized with those substitutes. But obviously, is that possible? Substitutes are substitutes after all, how can they compare with themselves?

This method can distinguish the differences between several groups of people, but it is still impossible to find the main one from them. It can only be judged by the frequency of appearance on certain major occasions to determine which group of people is Saddam himself. If Saddam is smart enough, he will change the bodyguards around him from time to time, and several different stand-in-laws will appear in turn. The difficulty of distinguishing will increase exponentially.

"By the way, fat man, if you were yourself, could you recognize me?" Mr. Zhao was a mature man and asked again at last.

"If you see it with your own eyes within half a year, you can." Guo Tailai said with great certainty: "But the clarity on TV is not good unless there are particularly high-definition photos."

"Have you made a mark?" Mr. Zhao was overjoyed.

"It's just a mark for me." Guo Tailai did not hide it: "The length of the substitute and the few fine lines on his face is 0.1 mm different. My eyesight can tell, but it's not possible for ordinary people. But it's hard to say after half a year. The growth conditions are different, and the fine lines on his face will always change."

"That's the same as nothing. Even if you take high-definition photos, the time has passed when you get them back, and you don't know which one will appear again." Mr. Zhao nodded, pondered for a while and reminded: "Then I will tell the above, you won't recognize it either."

Guo Tailai's eyes can directly measure the difference of 0.1 micron. This was measured by Zhao Yanyan himself in the National Key Laboratory of Shuimu University with a laser rangefinder. So Guo Tai said that he could distinguish the difference of 0.1 mm in size, but others definitely can't do it. At least Saddam and the others can't tell it, otherwise they wouldn't have found this problem face to face.

"Actually, it's good that I can't recognize you." Mr. Zhao is old and has experienced so many things, which is longer than Zhao Yanyanke. He continued with a smile: "It's better for us to watch the fun at that time than being asked to tell people at any time. There is no benefit in some things. It's good to not mess with them too much. It's good now. Make contributions when you should make contributions and withdraw when you should get out. You are not a person in the officialdom, so you don't have to worry about things that you shouldn't worry about."

"Thank you for your advice, grandpa." Guo Tailai thanked with a smile.

Mr. Zhao smiled and accepted Guo Tailai's gratitude without hesitation. Of course, he also understood what Guo Tailai meant to find him. This was his grandson-in-law whom he had already identified. He had decided whether to get married or not. Of course, he had to help with this kind of busyness.

"Fatty, is it possible to distinguish this difference in technology?" Zhao Yanyan is an engineering student. Since he talked about this topic, he couldn't help but want to continue to go deeper. It would be best to solve it technically, so he doesn't have to worry about it in the future.

"Yes!" When asked about technical questions, Guo Tailai never disappointed his senior sister.

As soon as he answered a word, Zhao Yanyan's eyes lit up. Even Mr. Zhao was surprised. Can it be realized technically?

"But it's not possible yet." Guo Tailai organized a vocabulary and said: "A powerful computer system can make targeted judgments, but the current chips and video recognition algorithms are still technically not up to date. If it is temporarily implemented, it will still be difficult."

"How to do it specifically?" Zhao Yanyan asked excitedly. This has nothing to do with the previous incident. It is simply to satisfy a female doctor's curiosity about the solution to technical problems.

"There is a branch of the security system that our company is currently developing, called the gait recognition system." Guo Tailai explained to his senior sister without hiding her own personalities and quickly said: "It is to determine his identity by analyzing the normal posture of a person's walking body and bones. The gait developed by different habits from childhood to adulthood is different. Like the fingerprint and iris voiceprint, it is a unique feature for everyone."

As long as this kind of gait recognition is proposed, Zhao Yanyan can immediately figure out the principle and feel relieved when he hears it.

"The current problem is the current computer performance bottleneck and optimization of video recognition algorithms." Guo Tailai continued: "The next step of the company may need to build a supercomputing center, and use the computing power of supercomputing to continue to improve the algorithm and realize video gait recognition. This is also very important for the company's safety. However..."

"But what?" Zhao Yanyan asked quickly.

"Even if there is a gait recognition system, it can only be used to distinguish four different groups of people." Guo Tailai smiled bitterly and said, "It is still impossible to confirm which one is the main master. Because we do not have the most original gait information of the main master, we cannot match it. Unless we can determine which one is the person, and then the correct gait data is stored first, and after the next time, we can recognize it from the walking posture. In addition, the restrictions are relatively large, and the requirements for video shooting are also very strict. The data in several directions must be compared at the same time."

"This gait recognition system can be used in the military's confidentiality department!" After Zhao Yanyan understood the principle, it was easy to understand the limitations that Guo Tai said, but the concept of this security system, used in the confidentiality department, is simply a super killer!

"Of course!" Guo Tailai replied with a smile: "I will recommend it to the military after our company passes the trial."
Chapter completed!