Electronics Technology


Using Wi-Fi to detect dangerous concealed objects

15 August 2018 Electronics Technology

American university researchers have come up with a way of using Wi-Fi signals to detect weapons, bombs and explosive chemicals concealed in bags, backpacks or other luggage. The collaborative, peer-reviewed study between Rutgers University-New Brunswick, Indiana University-Purdue University Indianapolis (IUPUI) and Binghamton University, received a best paper award at the 2018 IEEE Conference on Communications and Network Security.

The low-cost suspicious object detection system requires a Wi-Fi device with two to three antennas and can be integrated into existing Wi-Fi networks present in many public spaces. The system analyses what happens when wireless signals penetrate and bounce off objects and materials.

The wireless signals can penetrate bags to get the dimensions of dangerous metal objects and identify them, including weapons, aluminium cans, laptops and batteries for bombs. It can also be used to estimate the volume of liquids such as water, acid, alcohol and other chemicals for explosives, according to the researchers.

Experiments with 15 types of objects and six types of bags demonstrated detection accuracy rates of 99% for dangerous objects, 98% for metal and 95% for liquid. For typical backpacks, the accuracy rate exceeds 95% and drops to about 90% when objects inside bags are wrapped.





Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Microchip’s new IC to replace Hall effect position sensors
Altron Arrow Electronics Technology
The LX34070 IC from Microchip is set to help accelerate the global move away from expensive and less accurate magnet-based solutions for safety-critical EV motor position monitoring.

Read more...
A brief history of HBTs
Conical Technologies Electronics Technology
In 1947 the engineers at Bell Labs were tasked with developing a transistor. This development heralded the beginning of the semiconductor industry which changed the world forever. Transistors would have ...

Read more...
Research project achieves major advance toward fusion energy
Electronics Technology
New superconducting magnet designed by MIT breaks magnetic field strength records, paving the way for practical, commercial, carbon-free power.

Read more...
Report forecasts impact of electrically conductive adhesives
Electronics Technology
IDTechEx recently published a market research report, ‘Electrically conductive adhesives 2022-2032: Technologies, markets and forecasts’, covering this emerging form of joining technology. Electrically ...

Read more...
NXP exhibits the art of semiconductors
Electronics Technology
An exhibit of semiconductor history reinterpreted as art recently finished its run at ArtEZ University of the Arts in the Dutch city of Arnhem, close to Nijmegen and it was based on NXP Semiconductor’s ...

Read more...
IBM shrinks chip geometries to 2 nm
Electronics Technology
The current state-of-the-art in terms of semiconductor chip geometries has been superseded by a new breakthrough coming out of IBM’s world renowned research division. Currently the ‘process node’ most ...

Read more...
Challenges for electronic circuits in space applications
Altron Arrow Electronics Technology
Outside the protective cover of the Earth’s atmosphere, the natural space radiation environment can damage electronic devices and the effects range from a degradation in parametric performance to a complete functional failure.

Read more...
The surprising ingredients used to bake a solar-panel cake
Electronics Technology
Jon Major, from the BBC’s Future Planet team, has written an article that explores “The unexpected ingredients that improve solar cells”. Some of these ingredients include the likes of capsaicin, the ...

Read more...
Analog Devices leverages Microsoft’s 3D ToF tech
Electronics Technology
Analog Devices is working with Microsoft to leverage Microsoft’s 3D time-of-flight (ToF) sensor technology, allowing customers to easily create high-performance 3D applications that bring higher degrees ...

Read more...
IoT communication without batteries
Electronics Technology
When we talk about IoT, we often gloss over the fact that all these interconnected things need batteries and electronics to carry out the job of collecting and processing data while they’re communicating ...

Read more...