Capítulo 1414: Chapter 1338: Zzt Zzt
“Shen Yaowei has started a video call, want to take a look?” Wang Chuanxing stepped forward and softly asked Jiang Yuan.
“Shen Yaowei went with Group 6?” Jiang Yuan looked up. Latest content published on novel✦fire.net
“Yes, quite lucky.” Wang Chuanxing was indeed a bit envious. Following a group to these 8 locations not only reduces some of the investigative pressure on the Anwan City Bureau, but also serves to claim credit.
This is essentially a joint mission between Shan Nan and Pingzhou; the provincial office in Pingzhou has their reward system, and Shan Nan has its own merit register, not going would be a waste.
However, realistically only one person might share the spoils, basically relying entirely on luck. If Group 6 hits the target, then Shen Yaowei, who follows the group, will at least gain a commendation, maybe even easily put together enough for a third-class merit.
“Captain Jiang, we are now taking the suspect’s fingerprints.” Shen Yaowei, dressed in a police uniform, saluted Jiang Yuan, then switched the video to the front camera.
A man with a clean, non-greasy face and tattooed arms that showed bulging veins was placed at the center of the video screen.
From a police perspective, such a person must have had a complex background. Anyone with simple experiences couldn’t have such extensive and beautiful tattoos or the psychological stability to remain calm with ten police officers around.
Two criminal investigators flanked the suspect, and the person on the right held the suspect’s hand, rolling his fingers on the palm print device.
A person’s fingerprints are not only on the front; the sides also have fingerprints, which are often overlooked areas.
After all ten fingers were done, the on-site criminal investigators took his palm and side palm prints as well, operating on the same principle, only on a much larger scale.
“Report to the command center, Group 6 has completed fingerprint collection.” Shen Yaowei placed the phone on the table and respectfully saluted the camera.
The accompanying police all saluted as well. Everyone knew that Jiang Yuan was watching on the other side, and each person’s expression and movement were extremely serious.
The suspect, who had been re-handcuffed, looked a bit bewildered, his expression darkened, then suddenly changed as he shouted loudly, “Leaders, I’m wronged, they are violating my privacy rights, coercing me, and… and even hitting me in the stomach…”
“Later, let the prosecutors get involved early. Deliver the files,” Jiang Yuan gave a brief instruction, also directed at Shen Yaowei.
“Yes.” Shen Yaowei quickly opened his laptop, connected the palm print device, and packed all the data…
The requirement of 1000dpi is not low, at least for current domestic equipment, most cannot reach it. Shen Yaowei and his team specially selected newer models for the task.
The suspect, noticing something was wrong, shouted again.
The officer standing by the video call phone silently turned down the phone volume.
Meanwhile, a thousand miles away, Jiang Yuan had already asked someone to take the phone away. Once Wang Chuanxing adjusted the received files’ format, Jiang Yuan immediately started the one-to-one comparison with the newly collected fingerprints.
Theoretically, comparing such fingerprints doesn’t even require marking feature points. In the past, many senior criminal investigators mastered such fingerprint comparison techniques; confronting a suspect, they’d pull out a pre-prepared fingerprint card and have the suspect press a finger for onsite comparison. Why not use a mobile phone or laptop? Because they hadn’t been invented yet.
What Jiang Yuan is doing now essentially isn’t different, just using a high-definition system, observing the third-level fingerprint characteristics, thus elevating the cost of fingerprint identification from a 1-cent fingerprint card to a million-level expenditure, and…
He can use a smaller fingerprint area to prove it belongs to the individual.
Among the third-level fingerprint characteristics, sweat pore features are the most useful; each pore on every person is unique. For example, no one can have two identical nostrils or eyes.
Therefore, when a forensic technician acquires a fingerprint, if they can examine the sweat pore features, a very small portion can be used for verification.
Additionally, and actually importantly, sweat pore features are about the largest category of third-level fingerprint characteristics. Beyond that, characteristics like ridge width, epidermal ridge edge shapes, etc., require higher magnification to clearly display features.
This means that 1000dpi might not be enough, necessitating 1500 or even 2000; otherwise, the error rate is too high—especially for countries like the United States, if a project has a high passive error rate, people both outside and inside the enforcement system will deliberately create a high active error rate to achieve undisclosed purposes.
“Confirmation: match.”
Amidst the tense anticipation, Jiang Yuan completed the comparison.
The fingerprints collected from the clothes were discontinuous partial prints, severely damaging the second-level fingerprint characteristics but largely leaving the third-level characteristics unaffected. Jiang Yuan, although spending little time, chose several positions, verifying multiple times before confirming.
After all, once he confirmed this side, the suspect over there would be arrested; making a mistake would be troubling.
Waiting beside, Brigade Leader Liu Zhuangshi immediately picked up his phone to call the front-line Group 6.
Shen Yaowei was only assisting there; it was naturally personnel from Anwan Criminal Police Brigade leading the team.
Wang Chuanxing took back the phone, increased the volume, and showed it to Jiang Yuan and the others.
The suspect’s roars came again through the ongoing video call.
He realized he was about to face punishment, especially when his initial fluke proved impossible, all the worst predictions about to be realized, his only fallback was strength!
On screen, the suspect strained his arms, veins popping, even making his tattoos seem like they were trying to become three-dimensional.
At the early stage in a movie world, he might really have had a slim chance, but in today’s scenario, the Chinese officers only worried he might hurt himself, so hurriedly reassured, “Don’t be agitated, it’s fine, once we clarify the situation here, you can go back first…”
While deceiving him, the officers on each side discreetly pulled out their stun batons.
Watching the stun batons approach, Shen Yaowei couldn’t help but provide sound effects, “Buzz buzz…”
The suspect arched his back, thrust out his chest, then extended his neck, shaking from bottom to top like a mantis shrimp.
Then, the room went silent.
The suspect stopped yelling, and the comforting officers ceased their falsehoods.
“We’re taking the suspect back.” The leading criminal investigator reported to Liu Zhuangshi, and having received permission, escorted the suspect out the door.
In the conference room at the operation’s hub, Liu Zhuangshi, eyes sparkling until he lowered the phone, like his daughter asking for a toy at age five, extended his hands to Jiang Yuan, “Director Jiang, we have lots more evidence containing fingerprints!”