Ordinary wi-fi could be used to detect weapons and explosives in public places, according to a study led by the Rutgers University in New Jersey.
Wireless signals can penetrate bags to measure the dimensions of metal objects or estimate the volume of liquids, researchers claim. Initial tests appeared to show that the system was at least 95% accurate.
[...] The team behind the research tested 15 types of objects and six types of bags. The wi-fi system had success rates of 99% for recognising dangerous objects, 98% for metal and 95% for liquids. When objects were wrapped inside bags, the accuracy rate dropped to about 90%.
The low-cost system requires a wi-fi device with two or three antennas and can be integrated into existing wi-fi networks. The system works by analysing what happens when wireless signals penetrate and bounce off objects and materials.
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printed from SoylentNews, Wi-Fi Could be Used to Detect Weapons and Bombs on 2024-04-28 13:53:01