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Magnetometers may also be classified by their situation or intended use. Stationary magnetometers are installed to a fixed position and measurements are taken while the magnetometer is stationary. [4] Portable or mobile magnetometers are meant to be used while in motion and may be manually carried or transported in a moving vehicle.
The term typically refers to magnetometers used by military forces to detect submarines (a mass of ferromagnetic material creates a detectable disturbance in the magnetic field). Military MAD equipment is a descendant of geomagnetic survey or aeromagnetic survey instruments used to search for minerals by detecting their disturbance of the ...
While airport security may be the most visible and public use of body scanners, companies have opted to deploy passive employee screening to help reduce inventory shrink from key distribution centers. [33] [34] [35] The UK Border Agency (the predecessor of UK Visas and Immigration) initiated use of passive screening technology to detect illicit ...
A full-body scanner is a device that detects objects on or inside a person's body for security screening purposes, without physically removing clothes or making physical contact. Unlike metal detectors , full-body scanners can detect non-metal objects, which became an increasing concern after various airliner bombing attempts in the 2000s.
A MEMS magnetic field sensor is a small-scale microelectromechanical systems (MEMS) device for detecting and measuring magnetic fields (magnetometer). Many of these operate by detecting effects of the Lorentz force : a change in voltage or resonant frequency may be measured electronically, or a mechanical displacement may be measured optically.
In 1995 systems such as the Metor 200 appeared with the ability to indicate the approximate height of the metal object above the ground, enabling security personnel to more rapidly locate the source of the signal. Smaller hand held metal detectors are also used to locate a metal object on a person more precisely.
The CTX-9000 DSi system is the world's fastest FAA-certified (Certification moved to TSA Transportation Security Lab in 2002) Explosives Detection System, handling 542 bags per hour. It features alternate operational modes yielding even higher throughputs. The CTX-9000 DSi is designed for integrated airport installations.
Athena Security is an American security firm that develops Visitor Management [4] and weapon detection systems. [5] Its technology uses Apple iPad, thermal imaging cameras, low-frequency electro-magnetic technology, and artificial intelligence to detect threats, potential crime such as mass shootings, and those who may have a history of crime.
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