Wicked Soldier King

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Psychologically speaking, the legend does n’t believe that this bad old man can turn Lin Ge into himself one by one, but this bad old man made a few strokes on his face with his fingers, nodded frequently, saying that although he Words that you do n’t understand but feel professional.

Nowadays advanced facial recognition systems and fingerprint recognition systems are very difficult to invade.

But Jiu Qianxiu has already mentioned in his speech about the facial contour trend, how to deceive the facial recognition system, etc., Jiu Qianxiu said that the head is right, which makes the heart of the legend no longer, after all This guy can be called one of the most powerful gods in Yirong.

After Jiuqianxiu's calculations, the materials needed were also very clear. Gu Qiya immediately ordered them to prepare everything they needed for Jiuqianxiu.

Although panicked about this legend, he still does not believe that Jiu Qianxiu can copy his fingerprints.

When Jiu Qianxiu took out the legend's fingers and looked at it, the legend couldn't help but say: "It's impossible, you don't have high-tech stuff, how could you copy my fingerprint ..."

You know, fingerprints are a form of proof that human activities will never go wrong. It is said that the skin of a four-month-old baby already has lines.

In fact, fingerprints begin to be produced when the embryo develops to four months, and begin to form in about six months.

After the baby is born, the fingerprint becomes thicker and the area increases with age, but the morphological structure, distribution range and overall layout of the pattern are basically unchanged for life and have a high degree of stability.

This is why all kinds of criminal investigation films can solve the case with the fingerprints left by the suspects.

Human physiological characteristics include fingerprints, face shape, iris, hand shape, sound, etc. Scientists have found through comparison and research that fingerprint identification is far easier than verification using other physiological characteristics, and has higher stability and security.

Although the cloning technology has been quite standard this year, it is said that clones may not have the same fingerprint, because each fingerprint has several unique and measurable feature points, which ensure the uniqueness of the fingerprint.

This means that the two fingerprints may have the same overall characteristics, but their detailed characteristics cannot be exactly the same.

This is the reason why Legend does not believe in Jiu Qianxiu.

"Fingerprints are indeed the most difficult to copy." Jiu Qianxi smiled slightly, and he was professional in this respect. He knew much better than legends: "Each fingerprint has several unique and measurable characteristics. Points, and each feature point has about five to seven features, and our ten fingers produce at least 4,900 independently measurable features. "

The legend is shocked. This guy is too professional. He is just as confused as he was just now, but this is quite professional.

"Because the fingerprint pattern is not continuous, smooth and straight, but often has interruptions, bifurcations or turning points. These breakpoints, bifurcation points and turning points are called characteristic points. It is these characteristic points that provide the uniqueness of the fingerprint. Information. "Jiu Qianxiu continued.

Xu Yun and they were also quite surprised. Jiu Qianxiu's expertise in "copying others" has far exceeded their expectations.

Jiu Qianxiu has not finished: "The most typical feature points are end points and bifurcation points, and also include divergence points, isolated points, ring points, short lines, etc. The difference in fingerprints is enough to show that fingerprint recognition is a more Reliable identification method. Know that twins that cannot be distinguished by DNA identification can be distinguished by fingerprints. "

The legend opened his face in surprise: "Then ... that's so difficult, how could you possibly duplicate it?"

"I never studied fingerprint replication a long time ago, but then I saw a news, so I had a whimsy in this regard." Jiu Qianxiu said: "It is said that a school in Australia installed a fingerprint attendance system to prevent students from skipping classes Opportunity to urge everyone to take classes. However, there are policies under the policy, some students have come up with a method of using fudge to forge fingerprints, trying to deceive this high-tech system. "

This sound really makes sense. If you press the fingerprint on the fudge, you can get an opposite fingerprint, and then repeatedly press with two pieces of fudge, it seems that you can really copy a fingerprint.

But the problem is that the lines on a piece of jellybeans are already unclear, and it is estimated that the second copy is hard to deceive the fingerprint machine.

The same is true in reality, so forging fingerprints is very unreliable. But it also shows that it is not impossible to copy fingerprints, and students with big brains get the job done.

"Fudge is unreliable, but gel is okay." Jiu Qianxiu smiled.

Gel is an ingredient in fudge.

"You ... are you whimsical?" The legend shook his head in disbelief.

"I have successfully used gel to make fake fingers that can deceive the fingerprint machine. Although the success rate cannot reach 100%, it has reached more than 70%." Jiu Qianxiu: "I only need to do three fake Finger, you can be sure that one of them can be successful. "

Legend shook his head: "Impossible ... impossible at all, this is just your theory!"

Gu Qiya was also surprised: "Nine Uncle, how do you say this?"

"Fingerprints are extracted using forensic methods, then photographed with a high-resolution camera, transferred to a computer for various processing such as left-right and reverse, and then made for artificial fingers." Jiu Qianxiu is not just talking, he I ’ve done it, so I ’m familiar with it: “The accuracy of the template directly affects the fidelity of the fingerprint. Using the similar technique of the printed circuit board, the sample image can have slight protrusions to meet the requirements of the mold. Finally, the gel Just lay it on the template. "

Lin Ge exclaimed: "You are awesome, is this too great?"

"Of course, this method can't deal with those fingerprint readers that can recognize the transparency, hardness, charge carrying, and the level of bubbles." Jiu Xiu Dao: "So I added some processes to this, I can make this A good gel perfectly covers your fingers, even fingerprint readers that can recognize transparency, hardness, charge carrying, and steam level can be confused. "

Lin Ge admired the thumbs up.

Xu Yun is also amazed. I am afraid that this level can only be achieved by his first person.

It's just that it's not a good thing to copy this thing. Sooner or later, this thing will be popularized in this world. In case you have mastered this technology, you can easily copy your fingerprints. Everyone who goes out must wear gloves.

Once the leaked fingerprint information is used by criminals, it will cause great harm to individuals and society. The uniqueness and uniqueness of fingerprints make them extremely important personal information, which can also be called personal privacy.

If the fingerprint information is leaked or copied and used by others, the consequences will be unimaginable.

What is more terrible is that fingerprint recognition has the biggest disadvantage compared with digital password recognition technology, that is, once the biological characteristics of the parties are stolen or copied, it is difficult to change their own characteristics like changing the password.

So if this thing is stolen by someone, huh, huh, it's not as simple as retrieving the password of the ball. The digital password is recovered and it will be finished. How to change the fingerprint?

The legend is a bit confusing. He regretted that he did not set the iris password. It was also because someone told him that the iris password was not safe. It was said that now there is technology to produce a fake artificial iris within ten minutes.

The reason is also very simple. The data generated when scanning the iris of the eye creates a unique iris code through research on information such as mode, texture, and size. Once there is information output, after one to two hundred iterations, it can be easily Make a fake iris.

Therefore, Legend believes in complex and unique "fingerprints", but did not expect that a bad old man in front of him can easily copy his fingerprints!

I already knew that he should set all kinds of biological passwords! In this way, the passwords of his various bank accounts and company accounts can be regarded as safe.

In fact, this is really the case now. Only the multi-mode biometric technology can solve the problem of all single-mode biometric systems.

After the fat man bought the things he needed, Jiu Qianxiu no longer delayed the time, and immediately started to do it! This is a time-consuming manual work.

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