Exam 6: Fingerprints

In which order should chemical treatments to visualize latent prints be performed? 1. Ninhydrin 2) Iodine fuming 3) Physical developer

Which step of the ACE-V process requires the examiner to identify any distortions associated with the friction ridges?

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)A class of fingerprints characterized by ridge lines that enter the print from one side and flow out the other side B)An inkless device that captures digital images of fingerprints and palm prints and electronically transmits them to an AFIS C)A square electronic dot that is used to compose a digital image D)A fingerprint impressed in a soft surface E)A class of fingerprints characterized by ridge lines that enter from one side of the pattern and curve around to exit from the same side of the pattern F)A system of identification of individuals by measurement of parts of the body, developed by Alphonse Bertillon G)A process through which a picture is converted into pixels H)A technique for visualizing latent fingerprints by exposing them to iodine vapors I)Ridge endings, bifurcations, enclosures, and other ridge details which must match in two fingerprints to establish their common origin J)A chemical reagent used to develop latent fingerprints on porous materials by reacting with amino acids in perspiration K)A class of fingerprints that includes ridge patterns that are generally rounded or circular and have two deltas L)A physical change from the solid directly into the gaseous state M)A fingerprint made by the deposit of oils and/or perspiration; it is invisible to the naked eye N)A silver nitrate-based reagent formulated to develop latent fingerprints on porous surfaces O)To emit visible light when exposed to light of a shorter wavelength P)A technique for visualizing latent fingerprints on nonporous surfaces by exposing them to cyanoacrylate vapors Q)A fingerprint made when the finger deposits a visible material such as ink, dirt, or blood onto a surface R)A verbal description of a perpetrator's physical characteristics and dress provided by an eyewitness -Whorl

________ include ridge patterns that are generally rounded or circular and have two deltas.

The value of ridge patterns in determining the uniqueness of a fingerprint is ________ the value of type and position of ridge characteristics in determining the uniqueness of a fingerprint.

Name two main drawbacks to using AFIS.

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)A class of fingerprints characterized by ridge lines that enter the print from one side and flow out the other side B)An inkless device that captures digital images of fingerprints and palm prints and electronically transmits them to an AFIS C)A square electronic dot that is used to compose a digital image D)A fingerprint impressed in a soft surface E)A class of fingerprints characterized by ridge lines that enter from one side of the pattern and curve around to exit from the same side of the pattern F)A system of identification of individuals by measurement of parts of the body, developed by Alphonse Bertillon G)A process through which a picture is converted into pixels H)A technique for visualizing latent fingerprints by exposing them to iodine vapors I)Ridge endings, bifurcations, enclosures, and other ridge details which must match in two fingerprints to establish their common origin J)A chemical reagent used to develop latent fingerprints on porous materials by reacting with amino acids in perspiration K)A class of fingerprints that includes ridge patterns that are generally rounded or circular and have two deltas L)A physical change from the solid directly into the gaseous state M)A fingerprint made by the deposit of oils and/or perspiration; it is invisible to the naked eye N)A silver nitrate-based reagent formulated to develop latent fingerprints on porous surfaces O)To emit visible light when exposed to light of a shorter wavelength P)A technique for visualizing latent fingerprints on nonporous surfaces by exposing them to cyanoacrylate vapors Q)A fingerprint made when the finger deposits a visible material such as ink, dirt, or blood onto a surface R)A verbal description of a perpetrator's physical characteristics and dress provided by an eyewitness -Iodine fuming

A chemical method used for developing prints on nonporous surfaces is:

A plain ________, formed by ridges entering from one side of the print and exiting on the opposite side, is the simplest of all fingerprint patterns.

Computerized fingerprint search systems match prints by comparing the position of ________ and ________.

Superglue fuming is NOT suitable for use on:

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)A class of fingerprints characterized by ridge lines that enter the print from one side and flow out the other side B)An inkless device that captures digital images of fingerprints and palm prints and electronically transmits them to an AFIS C)A square electronic dot that is used to compose a digital image D)A fingerprint impressed in a soft surface E)A class of fingerprints characterized by ridge lines that enter from one side of the pattern and curve around to exit from the same side of the pattern F)A system of identification of individuals by measurement of parts of the body, developed by Alphonse Bertillon G)A process through which a picture is converted into pixels H)A technique for visualizing latent fingerprints by exposing them to iodine vapors I)Ridge endings, bifurcations, enclosures, and other ridge details which must match in two fingerprints to establish their common origin J)A chemical reagent used to develop latent fingerprints on porous materials by reacting with amino acids in perspiration K)A class of fingerprints that includes ridge patterns that are generally rounded or circular and have two deltas L)A physical change from the solid directly into the gaseous state M)A fingerprint made by the deposit of oils and/or perspiration; it is invisible to the naked eye N)A silver nitrate-based reagent formulated to develop latent fingerprints on porous surfaces O)To emit visible light when exposed to light of a shorter wavelength P)A technique for visualizing latent fingerprints on nonporous surfaces by exposing them to cyanoacrylate vapors Q)A fingerprint made when the finger deposits a visible material such as ink, dirt, or blood onto a surface R)A verbal description of a perpetrator's physical characteristics and dress provided by an eyewitness -Sublimation

RUVIS detects prints by using chemical treatments.

Under which circumstances have two people been found to have identical fingerprints?

The most common ridge pattern is the: