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19 Terms
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Dactylography
The scientific name for a fingerprint.
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Direct Evidence
Evidence that proves a fact directly, without the need for inferences or assumptions.
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Biological Evidence
Samples of biological material, such as blood, semen, saliva, hair, skin cells, used in forensic investigations.
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Physical Evidence
Any material item found at a crime scene that can provide information about the crime.
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ACE-V
A forensic methodology acronym that stands for Analysis, Comparison, Evaluation, and Verification.
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Latent Fingerprints
The most common type of fingerprints found at crime scenes, created from naturally occurring oils and sweat.
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Patent Fingerprints
Fingerprints that occur when a finger comes into contact with a substance, transferring it onto a surface.
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Plastic Fingerprints
Three-dimensional prints formed on soft materials such as wax, clay, or wet paint.
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Loops
The most common fingerprint pattern, making up about 60-65% of cases, characterized by one delta.
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Whorls
Fingerprint patterns that make up about 30-35% of cases, characterized by at least one ridge making a circular or spiral shape.
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Arches
A fingerprint pattern forming about 5% of cases, characterized by ridges entering from one side, rising in the middle, and exiting on the opposite side.
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Minutiae
The small, characteristic details of fingerprint ridges used for comparison in identifying fingerprints.
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Ridgeology
The study of ridge structures and characteristics in fingerprints.
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Sir Edward Henry
The British official who developed the Henry Classification System for classifying fingerprints.
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John Dillinger
A criminal known for undergoing plastic surgery to alter his fingerprints.
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Sir Francis Galton
The scientist who noted that no two people have the same fingerprint and that they remain consistent throughout life.
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Henry Classification System
A system for classifying fingerprints developed by Sir Edward Henry in 1896.
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Automated Fingerprint Identification Systems (AFIS)
Systems developed in the 1990s for automating the identification of fingerprints.
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Dr. Edmond Locard
The forensic scientist who stated that 'every contact leaves a trace.'