FINGERPRINTS
And how they work
Fingerprints are a pattern of
ridges and valleys on the tips of your fingers. No two people in the world have
the same prints and your prints never change as you get older. That makes them
a great way to identify people. Thumbprints and Fingerprints have been used
since the end of the nineteenth century in matters of criminal nature. A few countries, including the United
States, apply fingerprinting in other areas, such as immigrations matters.
Fingerprints were once filed by what was
referred to as the Henry Classification, a method somewhat similar to the Dewey
decimal system. It grouped the whorls and arches on each print, and counted
point ridges. In order to find a match, prints had to be checked manually
against those falling in certain classifications. It was a very time consuming
process, and it was difficult to locate a match.
The new computer technology has changed all
that, and the entire process is done electronically. The fingerprint is scanned
into a computer and digitized. Each minutia, or place at which ridge lines and
or split in two, is noted and categorized by its type (end or split), by
location, and ridge direction. Four neighboring minutiae are then examined, and
the ridges between the minutiae are counted. This process is extended again,
and blurred areas of the fingerprint are ignored. Next, relative position and
relationship to other ridges is noted and stored on a 512 pixel-per-inch scale.
Finally, the relationship of minutiae’s information obtained is entered into a
database. Matching is accomplished as the computer scores how closely a
potential match comes to the search print based on the information stored in
that database.
This site caught my eye because it goes into the history
of fingerprints. Plus I have a lot of blue in my blood.
http://www.policensw.com/info/fingerprints/finger01.html
This site caught my eye because you can get all the information
you want about forensics, fingerprints included. This is why I attend college,
because this is what I want to be doing, my passion. So in other words, welcome
to my world.
http://wwwscience.murdoch.edu.au/teaching/m235/forensictech.htm
Fingerprinting can keep you from getting a scholarship;
don't believe me check this out.
http://www.brunei-online.com/bb/thu/jul21h6.htm
From getting a library card, to Disney
world passes, to fast passes on planes, fingerprinting is a growing technique
that will allow business and Governments to really know who and where you are
at all times.
u/…forinsictech.htm
