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The Laboratory Services Section
specializes in
fingerprint, footwear, and tire print analysis. Lab personnel are
also responsible for training officers how to locate, develop, and lift latent
fingerprints. The FWPD Lab has evolved into a regional leader in the field of
fingerprint analysis.
Uniform officers, Detectives, and Crimes Scene Technicians routinely
lift prints at crime scenes. Any item that may be difficult to
process at the scene is taken into evidence and processed at the lab or
the vehicle-processing garage.
Once a print is located, a variety of dusting and lifting techniques are
utilized to transfer the print to a storage medium that will preserve
the image. The print-image is then examined for pattern
characteristics that will result in a certain classification.
Surface textures and other factors can determine whether a print can be
lifted from an item. Through past experience, most officers can
quickly determine if an item or surface will yield any usable prints.
In the year 2002, after many years of research, the department finalized
the purchase and installation of an Automated Fingerprint
Identification
System (AFIS). At a cost of over one million dollars, the
AFIS system is expected to be a significant investigative-support tool
in the department's crime fighting arsenal.
The AFIS system uses computer-based technology to ascribe a digital code to all fingerprints scanned into its database. As
fingerprints are collected from arrestees, the data library continues to
grow. The Fort Wayne/Allen County system currently contains the
prints of over 86,000 people and is growing every hour. In
addition to our local files, we now have the ability to tap into the FBI's
national fingerprint database which contains the fingerprints of millions
more people.
When a
latent fingerprint is found at the scene of a crime, it can now be
scanned into AFIS and checked against the existing database. AFIS
provides a list of possible matches, which are then analyzed by a
fingerprint-specialist for final
confirmation. The AFIS
systems also helps to identify prisoners who provide false
identification when they are arrested. Within first six months of
its implementation, AFIS tripped-up 48 prisoners who clamed to be
someone else. While very expensive to implement and
maintain, the AFIS system is expected to yield years of public safety
support by aiding in the identification and conviction of hundreds of
criminals who would otherwise go undetected and free to prey on more
victims.
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