What's That (vocab)?
These are fingerprints made by the deposit of oils and/or perspiration.
What is a latent fingerprint?
This chemical bonds with amino acids in fingerprints to produce a purple-blue color. We use it to lift prints from paper or cardboard.
What is Ninhydrin?
These are the 3 specific classes for all fingerprints.
What are arches, loops, and whorls?
In addition to touching as little as possible, investigators should always wear these at a crime scene.
What are gloves?
Implemented in 1999, this program is run by the FBI and it is the largest of its kind in the US; it links all state computers to the FBI and it stores nearly 50 million fingerprint records
What is IAFIS?
Ridge endings, bifurcations (forks), eyes, dots (and many more) are all examples of this.
What are ridge characteristics or minutiae?
Heating items in a vapor tent with this chemical develops latent prints from a wide variety of household objects or items. It produces a white print.
What is cyanoacrylate or super glue?
This is the simplest type of fingerprint and can be found in 5% of the population.
What is the arch?
This fingerprint is visible to the naked eye at a crime scene. It might be left behind in blood, ink, dirt, etc.
What is a patent print?
The center of an arch or loop.
What is a core?
This is the study of the uniqueness of friction ridge structures and their use for personal identification
What is dactylography or dactyloscopy?
This chemical reacts with salt deposits in sweat to form black red or brown prints when exposed to sunlight (or UV light). We use it to develop prints on wood or styrofoam.
What is silver nitrate?
This type of loop opens towards the little finger or the ulna bone.
What is an ulnar loop?
This part of the finger appears black in a fingerprint produced by inking the fingers.
What is a ridge?
The number of ridges that appear between the core and delta on a loop print.
What is the ridge count?
The layer of cells that separate the epidermis and the dermis; the folding of this layer forms skin ridges.
What is the basal layer?
Heating paper, cardboard, or unpainted surfaces in a vapor tent causes with this chemical stains the carbohydrates in latent prints and create prints in a brown color. The print fades quickly and must be photographed.
What is iodine?
The whorl contains two or more patterns that do not fall under any other category.
What is an accidental whorl?
Its abbreviation is AFIS
What is the Automated Fingerprint Identification System?
A ridge enters on one side of the finger and leaves on the other.
What is an arch?
These glands are located on the ridges of your hands and feet. They secrete oils that can be left behind as latent prints.
What are eccrine glands?
The primary precaution in all fingerprint cases is the prevention of these two errors.
What are
1) adding fingerprints to evidence?
2) smearing or destroying prints?
This is the most common type of fingerprint class -- found in 60% of people
What is the loop?
This fingerprint classification system, developed in the 1880s, is still used in the USA and Europe today.
What is the Galton-Henry method?
This is an inkless device that captures digital images of fingerprints and palm prints and electronically transmits them to an AFIS; it largely replaces the common image of a booking officer.
What is a scanner?