The WiFi can turn into a universal surveillance tool.

"Researchers show that ordinary WiFi signals can be used to create camera-like images of people in their surroundings, even if those people are not carrying active devices. Credit: Shutterstock" (ScitechDaily, Researchers Warn: WiFi Could Become an Invisible Mass Surveillance System)

The WiFi system can act like radar. It can track people and devices using the radio echoes. The WIFI support stations can also act like Doppler radars. When those systems are in line, the system can search. The transition of the echo comparison.The strength. Of the echo in different antennas. The WiFi systems can also use the radio signals. That. It sends from different positions. The system can use many methods. To track people. Even if their devices are shut down. The system can locate computers. Very easily.  

If a certain computer shuts down, the system can simply take over. An image of that place. Then it can give. The image of the user is sent to other cameras and tracks the targeted person in the network area. The NAT technology means that. Multiple WLAN hotspots can offer access to the network by using different names. Normally, a WLAN, or WiFi, makes contact with the strongest hotspot. That causes problems. Because if thousands of devices (Cell phones, cameras, computers, cash systems) make contact with the same hotspot, that can cause the failure. 

The NAT means that the system. Those requests. Access to the system. Can see the name of the access point. But. The name of the same access point can be different. If we look at it from inside the network. This ability is important. In the very huge networks. If hundreds or even thousands of devices come into contact with the hotspot at the same moment. That can cause a rush. This is the reason why there are password-protected access points and free access points. The password protection denies the possibility. That maybe. Thousands of devices can make contact. With the same hotspot. The password protection allows. The full-time access to shops. That needs the WiFi for their cash systems. 

The WiFi station is an interacting radio device. When we use technologies like WiFi and GSM (5G, etc.), we utilize similar technology all the time. The difference between 5G. And WiFi is how to log in. The 5G requires a SIM card, and the WiFi uses a network card.  WiFi takes. And. Maintains a connection with computers using the MAC address and IP address. 

When the computer makes first contact with the hotspot. It sends the MAC address to the system. Then the hotspot sends the IP address to the computer. Without that address, communication between the hotspot and the computer is impossible.

Those are the things that make WiFi “secured,” and the other purpose of those identifiers is to aim the data precisely. To a certain computer. This thing is important if the WiFi (WLAN) network uses roaming actions. The roaming. Means that when a user moves into the house. Roaming allows a computer to change. The access point. 

The thing. That allows a computer to select the right information from data that travels across the air using the same frequencies. It is encryption and decryption. When a computer makes a connection. To a WiFi hotspot, that hotspot gives it the decryption and encryption key. Those keys allow the computer to select data packages. That is meant for it. When the computer moves to the other hotspot area, the hotspot checks the encryption key. 

This allows for protecting data, but it also. Makes it possible to transport data. In the same frequency between multiple receivers. The GSM uses the same technology. And the SIM card is the key to that long-range WiFi system. The fact is that. The cell phone might not have a very long range. The GSM, like 5G base. It is in the hotspots and their cooperation with the cell phone. The 5G access points form the network of the access points. Some of those access points can have a connection. With the physical lines, but most of them operate wirelessly. 

The WiFi stations can also make it possible. To track certain computers. The system must only know the IP address of that computer. And then it can use triangular measurement to track the computer. Then it can aim the surveillance camera at that point. This is one way to observe people. Tracking the 5G telephone and computer is a similar operation. The relay station, or access points, can be equipped with radio bearing systems. Those systems are actually the encrypted versions of the LORAN system. 

The system uses a similar radio bearing antenna. That ship’s LORAN system is used to track the marine radios for finding its location. The radio bearing antenna. That is, the access point can track any system. That takes contact with it. The system. That is installed in the hotspot station, as one of its antennas, which can help the rescue crew. To locate the GSM that makes the emergency call. But. The same system can also detect cell phones and network cards that communicate. By using certain encryption keys. 

 https://scitechdaily.com/researchers-warn-wifi-could-become-an-invisible-mass-surveillance-system/