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  2. Forensic firearm examination - Wikipedia

    en.wikipedia.org/wiki/Forensic_firearm_examination

    After test firing the guns, Goddard proved that the weapons were those used to kill the members of the North Side Gang, absolving the Chicago police department of all involvement. [12] The successful use of Goddard's technique resulted in the solidification of his place as the father of forensic firearm examination.

  3. Safety (firearms) - Wikipedia

    en.wikipedia.org/wiki/Safety_(firearms)

    In firearms, a safety or safety catch is a mechanism used to help prevent the accidental discharge of a firearm, helping to ensure safer handling. Safeties generally can be divided into subtypes such as internal safeties (which typically do not receive input from the user) and external safeties (which typically allow the user to give input, for ...

  4. Gun safety - Wikipedia

    en.wikipedia.org/wiki/Gun_safety

    Gun safety is the study and practice of managing risk when using, transporting, storing and disposing of firearms, airguns and ammunition in order to avoid injury, illness or death. Gun safety includes the training of users, the design of firearms, as well as the formal and informal regulation of gun production, distribution, and usage. [ 1 ]

  5. As Biofire begins shipping America's first biometric 'smart ...

    www.aol.com/news/america-first-biometric-smart...

    Gun-rights activists helped shut down the last major attempt to sell a smart gun in the U.S. in 2014, when a German company called Armatix introduced a gun equipped with radio-frequency technology ...

  6. Smart lock - Wikipedia

    en.wikipedia.org/wiki/Smart_lock

    Industrial smart locks (passive electronic lock) are a branch of the smart lock field.They are an iterative product of mechanical locks like smart locks. However, the application areas of industrial smart locks are not smart homes, but fields that have extremely high requirements for key management, such as communications, power utilities, water utilities, public safety, transportation, data ...

  7. Fingerprint powder - Wikipedia

    en.wikipedia.org/wiki/Fingerprint_powder

    This instrument can identify many compounds. In the study, fingerprints tested contained known solvent residues. The fingerprint powder along with the MALDI matrix had the highest average detection rates of (88%). [11] Since this study was controlled, it is known that the use of this further application with the MALDI/TOF MS would be effective ...

  8. Biometric device - Wikipedia

    en.wikipedia.org/wiki/Biometric_device

    Fingerprint sensors can be found on mobile devices. The fingerprint sensor is used to unlock the device and authorize actions, like money and file transfers, for example. It can be used to prevent a device from being used by an unauthorized person. It is also used in attendance in number of colleges and universities.

  9. Fingerprint scanner - Wikipedia

    en.wikipedia.org/wiki/Fingerprint_scanner

    The measure of the fingerprint image quality is in dots per inch (DPI). [8] Optical scanners take a visual image of the fingerprint using a digital camera. Capacitive or CMOS scanners use capacitors and thus electric current to form an image of the fingerprint. This type of scanner tends to excel in terms of precision.