Miyun District Public Security Bureau!
Chen Ting walked out of the identification room door facing the gazes of the police officers. Hearing everyone's questions, he smiled and nodded:
"Fingerprint extraction was indeed successful!"
Shen Ting opened the appraisal report in his hand and showed it to all the police officers.
Everyone's eyes widened immediately!
I saw an extremely clear fingerprint printed on the A4 paper.
Fingerprint shapes can be divided into three categories: bow, dustpan, and bucket.
The extracted fingerprint displayed by Chen Ting is an arch pattern.
And it is a simple bow, that is, the fingerprint lines are smooth and there is no triangular area.
The whole extends in a wavy shape from one side to the other.
However, this fingerprint is not 100% complete, but only about 80% to 90% complete.
Some areas are still missing!
The police officers were all surprised and delighted:
"Is it really true?"
"The leather jacket is shattered, how can it be extracted successfully?"
"The leather jacket was damaged, but it didn't cause any impact?"
…
Coach Su was particularly shocked. He quickly flipped through the appraisal report, his eyes widening.
"this……
It seems that the extraction was successful?"
The reason why he said "seemed" was because he was not 100% sure.
He simply couldn't understand many of the identification processes in the report.
It’s different from what he had guessed before!
Shen Ting's identification not only used a lot of technologies that were still in the experimental stage.
It even used a lot of new technologies that he had never even heard of.
Director Su looked at Shen Ting in disbelief:
“Advisor Shen, did you really complete this identification process?”
As soon as he said this, he realized that he had asked a very stupid question.
He witnessed the entire identification process of Shen Ting with his own eyes. Is there any need to ask others whether it was Shen Ting's personal identification?
but!
Director Su was not embarrassed.
He dared to say that even the most skilled trace examiner would not be able to remain calm after seeing this identification report.
Because this report contains a technological breakthrough in extracting fingerprints from highly carbonized leather!
This is a technical problem that has troubled trace examiners around the world for decades.
Countless experts have concluded that there is no way to solve this problem.
But today, this technical problem was solved right in front of him, in the small appraisal room in Miyun District.
As a trace examiner, how could he not be excited when witnessing such technological innovation with his own eyes?
Director Su calmed down for a moment and changed the question:
“Advisor Shen, I see that you not only used several new technologies to extract fingerprints.
The final fingerprint shape seems to have been determined by combining the deformed fingerprints on the bomb fragments?"
“That’s right!”
Shen Ting nodded and smiled:
“We did encounter many difficulties in extracting fingerprints from carbonized leather.
Everyone should have seen the biggest difficulty.
There was one fingerprint that was the clearest and that I needed, and while doing it, the leather jacket shattered.
Fortunately, the fragments just avoided the area with dense fingerprint lines, and the "lines" formed by salt inside the carbonized layer were not destroyed.
However, even so, the original fingerprints I extracted from the carbonized leather were not complete.
Moreover, the process of salt entering the carbonized layer of leather will inevitably cause fingerprints to deform.
Simply put!
The extracted fingerprints are very different from the murderer's own fingerprints.
If you mark the characteristic points on the original fingerprint and perform fingerprint matching, it is basically impossible to succeed."
The police officers listened to Shen Ting's explanation and couldn't help but look at Director Su.
He had said before that even if fingerprints were extracted from severely carbonized leather, they would be too severely deformed to be of much use.
The two people's views should be consistent.
Director Su suddenly realized:
“So, you used the deformed fingerprints on the bomb fragments to find the fingerprints of the corresponding fingers on the carbonized leather.
Cross-identify the two?"
As he spoke, his brows furrowed again:
“Both fingerprints were severely deformed.
It must not be easy to restore fingerprints with the help of these two, right?
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