California (Web Desk) — Scientists have discovered a surprising use of Wi-Fi technology that could make it possible to identify people without cameras or additional sensors.
A study by Germany’s Institute for Information Security and Dependability involved 197 people, during which individuals were identified with nearly 100 percent accuracy using Wi-Fi signals in a controlled environment.
According to researchers, the method is based on analyzing radio signals emitted by wireless devices and reflected by the surrounding environment. By analyzing these signals, the system can identify people present in a location and obtain image-like information about their presence.
The study found that ordinary Wi-Fi equipment may be sufficient for this purpose, and the person being identified does not necessarily need to have a smartphone or any Wi-Fi device.
Researchers say the technology can obtain information in a way similar to a conventional camera, but instead of light waves, it uses radio waves.
Experts have warned that such use of wireless networks could pose a serious threat to security and privacy, as Wi-Fi networks could potentially be used in the future for widespread surveillance without people’s knowledge.