A guide to Automated Fingerprint Systems, and information on how AFIS works

AFIS stands for Automated Fingerprint Identification System, and it is a biometrics system for automated fingerprint identification; the system consists of a database of fingerprint images used for criminal identification purposes, and is used worldwide. A very simple definition of a fingerprint impression is any impression of, or left by, the friction ridge skin of […]

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Footprints and tire tracks, how do police match them to a suspect?

How do police develop, and collect, footprint and tire track impressions – and how do they perform forensic examinations on the impressions? Much like fingerprint impressions, footwear and tire impressions can be deposited on just about any surface; and just like fingerprint impressions, they fall into three basic categories. Visible (patent), latent, and plastic. Impressions […]

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Identifying latent fingerprints; a basic look at how police match fingerprints from a crime scene.

Identifying fingerprints is done almost at the touch of a button – at least that’s how it seems from watching TV. In real life, fingerprint comparisons can be a complex process, and quite difficult at times. The ability to accurately identify recovered fingerprints is critical in law enforcement, as a matter of fact, it’s invaluable. […]

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Gun Review: Sig Sauer 365

The Sig P365, 9mm sub-compact, takes a frame and slide that are either the same size or SMALLER than that of the Glock 43 (a single-stack gun) and adds 4 rounds to it. And it does it in a way that is more comfortable to hold and has a better trigger. Add the extended magazine, […]

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Avoiding Coronavirus Scams

Scammers are out to make a profit by exploiting health issues, and by taking advantage of fears surrounding the Coronavirus. They’re making phone calls, and setting up websites to sell bogus products. They set up fake sites that look official, then send emails, offering you tests, masks, cures, you name it. The emails and social […]

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The shotgun in police service

As a police recruit in 1988, the sound of racking a round into shotgun in training had our class of 44 students all paying attention. We practiced with it, loaded and unloaded it until you could do it flawlessly. We did building clearing sceneries, felony stop scenarios, and answered simulated calls, and a Remington 870 […]

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Blood Spatter Interpretation, and how it is used in police investigations.

Modern American blood-spatter analysis didn’t originate in a crime laboratory, It started decades before the masterful Dexter, of TV fame, in Corning, New York, in Herbert MacDonell’s basement. MacDonell was a chemist, but he always forensics, and came up with the concept of magnet fingerprint powder, and invented the magnet fingerprint brush. His love for […]

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