Chapter 99 Fingerprint Information
Lu Chuan's age seems to be in his early twenties.
For Wang Hao to be able to join the task force established by the provincial government at such a young age, he naturally believed that there was someone behind it.
Otherwise, he also knew Liu Guodong, the current surveyor of Haizhou City. The two had participated in the fingerprint battle organized by the provincial department together, and they were comrades who were tied for the bottom.
Of course, there are more than two of them tied for last place. Under normal circumstances, there are always seven or eight people.
After all, not everyone can successfully compare fingerprints in every battle.
This requires luck and even more strength.
Liu Guodong of the Haizhou Criminal Investigation Detachment did not join the task force. Instead, a young criminal police officer like Lu Chuan did.
Wang Hao naturally has a guess as to what this means.
However, this has nothing to do with him.
Especially when Lu Chuan started doing such a low-level job as spot surveying and taking photos, Wang Hao's senses were greatly improved.
No matter how you get into the task force, if you are discerning and know how to respect your seniors, you are a good comrade.
But as he was doing it, Wang Hao realized something was wrong.
The process of the on-site survey and photography done by Lu Chuan was very standard. The selected points were just right. All the marked points did not need to be pointed by himself at all. Everything was done in an orderly manner.
This is not the behavior a young prospect should have.
Later, Wang Hao had a feeling of such a contrast.
Twenty minutes ago, Lu Chuan changed his camera.
Wang Hao knows that thing, and the current investigation office of Binzhou Criminal Investigation Detachment also has it.
Fingerprint camera.
Different from ordinary cameras, fingerprint cameras are special cameras designed for criminal investigation departments.
There are many types of fingerprint cameras, and their common features are fixed focal length, precise one-to-one ratio shooting system and self-powered lighting device.
Fingerprint cameras are easy to operate and flexible to use, but their popularity is not high yet. Because they are relatively expensive, ordinary cameras are mostly used to take fingerprints.
What surprised Wang Hao was not that Lu Chuan could take out or use the fingerprint camera.
But he was surprised by the fingerprint collection that Lu Chuan was doing. If he read correctly, Lu Chuan was collecting fingerprints from a rubber glove that was found in the trash can and taking a picture.
He has just inspected it and the entire operating room is very "clean".
Operating table, shadowless lamp, floor, surgical instruments, etc.
He has observed all possible places and basically found no valuable fingerprints.
The only few they have are scratch marks and have no collection value at all.
Wang Hao never thought about collecting fingerprints on rubber gloves.
It won’t work.
But Lu Chuan not only succeeded, but also explained it to him.
The economic development of BZ City is similar to that of Haizhou, or even a little behind.
Therefore, the Binzhou Criminal Investigation Detachment’s on-the-spot investigation and trace inspection are also a set of people and two brands.
Wang Hao also works part-time in spot inspection and trace inspection. He is quite moved by the fact that a junior like Lu Chuan, who is young and young and has just graduated and started working, is so capable.
Lu Chuan didn't have as many ideas as Wang Hao. This operating room converted from the basement was obviously the "first crime scene."
Although the other party cleaned the operating room after the "operation", many traces could not be eliminated by rough washing with water.
Advanced fingerprint identification analysis brings Lu Chuan more than just simple fingerprint identification capabilities.
For example, the image processing of fingerprints can be used by Lu Chuan not only on fingerprints, but also on other physical evidence analysis.
"Brother Wang," Lu Chuan was not polite. In a basement of more than 100 square meters, Lu Chuan would not be able to handle the current survey alone.
Wang Hao can help: "Although the other party has cleaned the operating table, instruments, shadowless lamps, etc., there are still some vague fingerprints left, and they are in the cracks on the floor, in the tiles in the corners, at the entrance to the sewer, etc. There are some traces left everywhere.”
"In this case, I'll wipe off the fingerprints first, and you can help me get the fluorescent lamp." Wang Hao naturally took the fluorescent lamp from Lu Chuan's hand and shined it on the edge of the operating table.
A blurry mess of fingerprints, like a pile of shit, appeared in sight.
This kind of fingerprint cannot be extracted using commonly used powder, magnetic powder and other methods.
The fingerprints are a blur, with lines superimposed and distorted. Due to the intervention of external forces, the deformation is very serious.
Ordinary extraction methods can only produce a shadow, and there is no way to carry out subsequent identification and analysis.
Lu Chuan's method is much simpler. He directly takes photos and collects them, and later uses image processing to extract the fingerprints in layers, which can increase the probability of successful identification.
Wang Hao took over the fluorescent lamp and officially started working with Lu Chuan.
To start, this was something Wang Hao only did when he first started working.
However, Lu Chuan's technique was indeed exquisite. It took Lu Chuan two hours to perform the operation on one operating table.
Of course, the results are also gratifying.
Three fingerprints blurred into three lumps of shit have been collected.
In addition, some dried blood samples were collected from the gaps between the wheels of the operating table.
The next thing was much simpler. Lu Chuan, who was lying on the ground, dug into the gaps between the floor tiles.
Wang Hao found a small bench and squatted next to Lu Chuan, watching him use tweezers to dig out a mess of dirty stuff from the gaps in the floor tiles.
The work of field survey is boring but also interesting.
The seemingly "clean and tidy" basement hides the subtle traces of sin and crime.
The Binhai Criminal Investigation Detachment’s preliminary trial of Chen Gang is still continuing, and the work of Lu Chuan and Wang Hao has finally come to an end.
Four thirty-two in the morning.
Lu Chuan bared his teeth while supporting his waist, which was already somewhat unable to straighten up.
But looking at the evidence in a cardboard box, the smile on Lu Chuan's face was still satisfied.
The dirty things dug out from the cracks in the ground were filled with seventy-two evidence bags.
There are still some hairs in the sewer, and some dander was extracted from the joint between the drain hole of the sink and the basin body.
In addition, there are thirteen fingerprints.
"Brother Wang, I'm not very good at evidence examination and analysis. Please worry about the DNA test. I'll do the fingerprint identification."
Wang Hao nodded numbly. He had been conducting field surveys for more than ten years. To be honest, Wang Hao rarely saw Lu Chuan's meticulous operations.
Wang Hao can also do things like buttoning floor seams, cleaning toilets, and rubbing sinks.
What made Wang Hao look at Lu Chuan with admiration was the method Lu Chuan used when collecting fingerprints.
Many of them were methods he had never seen or heard of before.
But the effect is obvious, and the thirteen fingerprints are the most powerful explanation.
"Okay, leave the DNA extraction to me, but these fingerprints..."
Thirteen fingerprints, although the number is large, the quality is really indescribable.
If a normal fingerprint sample is said to be a beautiful woman with long hair who is 1.7 meters tall, weighs 50 kilograms, is slim and smooth, with bulging front and back.
The fingerprints collected by Lu Chuan this time...should be Yang Sen's niece.
He is 1.5 meters tall, weighs 180, and has a toothy, bald and pockmarked face.
I really can’t put it down.
"It's okay, I have a way."
Lu Chuan is confident, advanced fingerprint identification and analysis, and is not afraid of coldness!
(End of this chapter)