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Boomerang, a gunfire locator, being used by British forces in Afghanistan Shooting Detector Diagram. A gunfire locator or gunshot detection system is a system that detects and conveys the location of gunfire or other weapon fire using acoustic, vibration, optical, or potentially other types of sensors, as well as a combination of such sensors.
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.
Three security scanners using millimeter waves were put into use at Schiphol Airport in Amsterdam on 15 May 2007, with more expected to be installed later. The passenger's head is masked from the view of the security personnel. Passive scanners are also currently in use at Fiumicino Airport, Italy. [38] They will next be deployed in Malpensa ...
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District 3 City Councilor George Russell is requesting full-body scanner safety equipment at City Hall to be installed on of before Dec. 31.
In January 2024, a Chicago Police Department officer responding to a ShotSpotter alert heard a loud bang, fired at a juvenile boy, and missed. An initial police communication stated the boy had fired a gun at officers. After investigation, it was determined the loud noise were fireworks. The juvenile was not hit by the police in the shooting.
Millimeter waves are used for military fire-control radar, airport security scanners, short range wireless networks, and scientific research. In a major new application of millimeter waves, certain frequency ranges near the bottom of the band are being used in the newest generation of cell phone networks, 5G networks. [2]
There are four types of fingerprint scanners: [7] optical scanners, capacitance scanners, ultrasonic scanners, and thermal scanners. The basic function of every type of scanner is to obtain an image of a person's fingerprint and find a match for it in its database. The measure of the fingerprint image quality is in dots per inch (DPI). [8]