182 Reverse Tracking
(Don't order it yet, try to finish this chapter in the early morning.) I feel like I'm almost recovered, but I'm inexplicably tired)
"It doesn't matter how the gangsters used that tape recorder to spy on Mr. Maori or give orders. But as long as it is unlimited communication, whether it is broadcasting, mobile phone signals, satellite signals, or other electromagnetic signals, all of them must be through electromagnetic waves! ”
Very certainly, Gao Yuan explained:
"Immediately contact Dr. Asa and ask him to listen to all the electromagnetic waves emitted around Kudo's house, and then find the signal of the so-called radio that Mr. Mori was carrying...... However, let Dr. Asa pay attention, don't let anyone find out! ”
"If Dr. Asasa was using his equipment, it would have been possible to listen to the signal. But even if we could hear the electromagnetic signal, we wouldn't be able to decipher the content if it weren't for the broadcast signal. ”
Xiao Ai asked suspiciously.
"It's okay, deciphering encrypted signals is what I do a lot!"
Seriously, Gao Yuan explained:
"As long as you can continue to listen and collect enough data samples, the general decipherment is still very simple!"
"Okay."
Seeing Gao Yuan say so confidently, Xiao Ai waved his hand helplessly, and began to dial Dr. Asasa's phone, telling Dr. Asa about the current situation and what he wanted Dr. Asa to do.
Immediately, after hearing Xiao Ai's explanation, Dr. Asasa, who had not fully woken up, immediately agreed, especially when he learned that he wanted to help find the murderer who framed Maori Kogoro, Dr. Asasa on the other end of the phone patted his chest and assured that such a thing as listening to signals was wrapped up in him.
In this regard, after doing this, he hung up the phone, Xiao Ai looked at Gao Yuan and said simply:
"Alright."
nodded, looking at this scene, Gao Yuan then thought about it, and said to Xiao Ai:
"So...... Gray Plains, can I trouble you to get a laptop? ”
Hearing this, it seemed that he had expected it, and with a sigh, Xiao Wai took out his backpack and took out a laptop from it and said:
"I thought you might be able to use it...... Oh, take it. ”
As he spoke, he saw that Xiao Ai wanted to hand the laptop to Gao Yuan, but looking at the fact that Gao Yuan was still hanging a drip at the moment, Xiao Ai couldn't help but say:
"But is it okay for you to look like this?"
"Hmmm......"
Looking at Xiao Ai's gaze, Gao Yuan also looked at his current situation, and then said:
"It's not a big deal, it doesn't matter. Just plug in to the main computer and have Dr. Asa transfer the data he's listening to. There is nothing difficult about how to do it...... I'm really not worried, you can operate it yourself and see it, and then give it to me when there is something that can't be handled. ”
In this regard, listening to Gao Yuan's words, Xiao Ai first opened the laptop, and after helping Gao Yuan complete the link to the main computer and the connection with Dr. Asasa's data, relying on his own ability, Xiao Ai tried to start the analysis of those data-
"Huh? Among these signals, there is actually a positioning signal......"
Soon, after trying to analyze the signals sent by Dr. Asasa, Xiao Ai first eliminated those signals that could be distinguished and were obviously not abnormal, but in the remaining signal data, the existence of positioning signals was discovered.
In this regard, Xiao Wai couldn't help but say in surprise.
"Location signal?"
Hearing this, Gao Yuan couldn't help but think about it when he heard Xiao Ai mention this:
"In other words, in the radio that Mr. Maori was carrying, the gangsters also deliberately installed a positioning device? That means ......"
"Does it mean that the gangsters have been in control of Mr. Maori's whereabouts and know where he will go?"
In this regard, Xiao Ai analyzed.
"No ......"
After thinking about it for a while, Gao Yuan couldn't help but analyze:
"Maybe the so-called surveillance is not simply a function on the radio to monitor the actions of the Maori detective, but it is possible that the gangsters have been following Mr. Maori all the time and directly observing him?
"Because I also thought about it before, but the sound monitoring obviously has drawbacks, and even if the camera is used to shoot secretly, there will be dead spots due to the angle, so compared to this surveillance method to limit Mr. Maori's actions, directly tracking Mr. Maori, and then monitoring Mr. Maori in the shadows, this may be the most perfect means of monitoring! The purpose of installing a positioning device is to prevent Mr. Mori from losing himself while maintaining a tracking distance. ”
As he spoke, Gao Yuan pondered for a moment, and then asked:
"Try to track down where the gangster chose to receive the signal?"
After speaking, I saw Xiao Ai put his hands on the keyboard of the laptop, first stunned for a while, without any operation, and then raised his head suspiciously, looked at Gao Yuan and asked:
"This ...... How to track it? It's just a transmitter signal that spreads outward, how can I possibly know where its receiver is through this source? As for the other signals, I haven't deciphered them yet! ”
After thinking seriously for a moment, Xiao Ai couldn't think of a solution to this problem.
"Didn't you say that? It is likely that the gangsters located Mr. Mori so that they could directly track Mr. Mori and observe him in his vicinity. So in that case, now that Mr. Mori is hiding in Kudo's house, it is possible that the current location of the gangsters is also nearby...... So, let's try to find out if there is anything suspicious near Kudo's house right now? ”
Gao Yuan said:
As for deciphering the signal, there is nothing more difficult, it is nothing more than converting the electrical signal to the analog signal, finding out the coding rules of the analog signal and the communication protocol used for reverse decipherment. Generally speaking, no one will use their own coding rules and communication protocols, they are all ready-made, so it is easy to crack them by comparing a few. ”
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… (End of chapter)