Chapter 84: Long-standing Trouble

Ordinary trace inspectors who do cold case fingerprints, after making results, have to submit them to fingerprint experts for review.

Some provinces and cities have organizations like "Fingerprint Expert Committees" to do fingerprint review work. But most feel that it wastes expert manpower, and they all adopt the mode of special personnel collection, then distribution to experts for review, and then summarizing opinions, such as Shannan Province.

However, during the fingerprint battle, there is no need to take off your pants to fart. Everyone present is an expert. Skipping these experts to find other experts is not just trouble, but also raises everyone's questions—is it that actively participating in the battle organized by the Provincial Department instead makes my expert qualification questioned.

At the same time, it is also to increase everyone's work fun and help everyone learn from each other. During the fingerprint battle, fingerprint review is reviewed among the experts present.

Every time 11 experts complete the review and have a majority vote of "agree to identify," this fingerprint comparison is considered successful. The Provincial Department fingerprint post can send a letter to the local Criminal Police Brigade to organize manpower for arrest.

However, even if 11 experts complete the review, the fingerprint match will still exist in the system, waiting for other experts to review.

If subsequent experts continue to choose "agree to identify," or if the majority chooses "agree to identify," it will not affect the subsequent operations of the fingerprint match. But in the whole process, if someone chooses "exclude identity," it may enter a new round of discussion and judgment.

Precisely because of this, the judgment of the "exclude identity" option must also be very cautious, and only when there is extremely strong confidence and judgment basis will someone choose it.

Li Zemin, the uncle next to Jiang Yuan, clicked on the system's message prompt for the first time. He has always entered the state relatively late, also because he is old and can't roll over young people, so he is used to fishing in the first few days, and often starts to exert force only three or four days after the fingerprint battle.

However, Li Zemin is still very concerned and curious about the identification of other fingerprint experts.

Any fingerprint in the target fingerprint library of the fingerprint battle is not simple. Most fingerprints are actually key fingerprints that have been read and compared by experts.

No county bureau will easily put the key fingerprints of major and important cases to the Provincial Department without multiple attempts.

And the experts in the fingerprint battle are naturally not fuel-efficient lamps.

As experts in the trace inspection post, the best in a province, who have accumulated a lot of experience and professional skills, will first choose the method they are best at, pick out the fingerprints they are most likely to match successfully, and then spend many hours, or even many days, trying to match the fingerprints.

Most fingerprint experts can complete one or two such matches in the 14-day period of a fingerprint battle, which is considered relatively successful.

And in order to complete such a match, fingerprint experts naturally have to use all their skills.

What Li Zemin likes most is these colleagues around him, who use all their strength and pretend to be indifferent.

In the system message, there are a total of 12 prompts, representing 12 cold case fingerprints being broken.

Li Zemin has already agreed to the first 11. There is nothing to say about this. The fingerprints completed in the first batch are all carefully studied and self-reviewed by experts. Few people are willing to spend a long time to achieve someone else's "exclude identity."

And the latest system message, clicked open, the two fingerprints that jumped out are also not beyond Li Zemin's expectations. With a little judgment, you can determine that the two are the same.

Forward comparison is relatively easy. It's like asking an ordinary person to find two pigs that look most alike from a group of pigs, which is naturally very difficult. But if you lead two pigs over and ask him if these two pigs look alike, most people can give a reliable answer.

Not to mention experts.

Li Zemin operated the mouse lightly and clicked "agree" on the latest system message.

Then, Li Zemin looked at the specific fingerprint information.

At this time, Li Zemin discovered that the signatory of the fingerprint's "identify identity" was Jiang Yuan next to him.

"Good fellow, good luck." Li Zemin muttered, and then continued to look at the fingerprints.

The first thing Li Zemin saw was the quadrilateral fingerprint structure. He couldn't help but smile, and then praised Jiang Yuan's luck.

However, when looking at the details of the feature points of the two fingerprints, Li Zemin's brows couldn't help but wrinkle.

Good fellow, good fellow...

Li Zemin couldn't help but turn his head, look at Jiang Yuan, and say: "The fingerprint match you made, isn't it chewed out by software?"

The matching of software systems has its rules. The most basic principle is the matching of how many feature points, and a more high-end one can be a scoring system, which is released when it reaches a certain score.

But Li Zemin looked at the two fingerprints, put them together, and couldn't even put together the feature points.

However, looking at it from the human standard, or not just comparing feature points, but comparing point-line-surface and other structures, it is indeed possible to identify identity.

This can be said to be a very honest way of fingerprint matching. In the era without computer system automatic matching, everyone used similar methods.

It's just rarer now.

Jiang Yuan's eyes stared at the screen, operating the mouse while saying: "It's when looking at other fingerprints, I suddenly saw it, pulled it over to compare, and it matched."

"Then your fingerprint memory is quite good." Li Zemin smiled. He understood what Jiang Yuan said, and it is normal thinking to encounter such a special fingerprint with a quadrilateral structure occasionally and compare it.

But if you really talk about fingerprint structure, in such a small fingerprint, a 1cm square area, besides the quadrilateral structure fingerprint, there may be pentagonal, hexagonal, circular, etc. structure fingerprints. You have to have a deep memory of fingerprints to do this.

"Good luck." Jiang Yuan responded, very perfunctory.

Li Zemin laughed, pointed at Jiang Yuan with his hand, and said: "This is good now. You are young and came to the fingerprint battle, and you already have a result. There is no pressure for the next step, and the pressure is all on us old guys."

While he was talking, someone agreed to Jiang Yuan's "identify identity" again, and the "Cold Case Solving Ranking List" projected by the projector on the front wall of the office also made an update immediately.

Jiang Yuan's name rose more than 20 places in one breath and came to the middle position.

And on the right side of his battle results, a "1" appeared without a doubt.

Li Zemin's name still fell behind, and there was only a "0" in the battle results, but he was not in a hurry. From 0 to 1, it has never been difficult.

Li Zemin even had time to continue to look at the cases that had just been identified as the same.

"It's the rape case of a minor girl in Miaohe County. This person has committed crimes in three places, I said it was a bit familiar!" Li Zemin hissed and shouted.

Many people looked over, but most of them just heard the movement and were touched. There are many major and important cases in the cold cases accumulated by the Provincial Department, and human memory is limited after all.

However, there were trace inspectors from Miaohe County in the office, who stood up at this time and walked over directly to ask: "You broke 515?"

"Not me, Jiang Yuan matched it. Ningtai County Bureau's." Li Zemin let go and helped Jiang Yuan introduce: "Qian Mingyu is a fingerprint expert in Miaohe County and has 20 years of police experience."

"20 years is useless. I have been staring at the 515 case for several years. The three victims were all middle school students. After the case happened, the parents came to our bureau many times. Later, the victims couldn't stay in the county, and they moved away one after another, and occasionally called to ask..." Qian Mingyu was slightly younger than Li Zemin, and sighed at this time.

Jiang Yuan said plainly: "I encountered a quadrilateral fingerprint, compared it, and identified it as the same."

"Let me see, where is the person?" Qian Mingyu was more familiar with Li Zemin and looked directly at his computer.

Li Zemin gave up the position, took a look at himself, and said: "Wanxiang City's, it's a bit far."

Wanxiang City and Miaohe County, one west and one east, can be considered to span the boundary of Shannan Province.

Qian Mingyu gave a heavy "mm," nodded to Jiang Yuan, took out his mobile phone, and said: "I'll tell our brigade captain, this case has been troublesome in our county for a long time." ===== CHAPTER 85 =====