Podcast
Questions and Answers
List 2 new technologies or gadgets in which fingerprints are needed.
List 2 new technologies or gadgets in which fingerprints are needed.
An iPhone 5S and a safe.
Is fingerprint identification reliable?
Is fingerprint identification reliable?
True (A)
List the three patterns of fingerprints and sub-patterns with percentages.
List the three patterns of fingerprints and sub-patterns with percentages.
Loops (65%): Radial and Ulnar; Whorls (30%): Plain (24%), Central Pocket (2%), Accidental (0.01%), Double (4%); Arches (5%): Tented (1%) and Plain (4%).
What does IAFIS stand for?
What does IAFIS stand for?
Describe how fingerprints are formed.
Describe how fingerprints are formed.
List the 3 fundamental principles for fingerprints.
List the 3 fundamental principles for fingerprints.
Who is known as American public enemy #1 in the history of the US, and what did he do to try to change his identity?
Who is known as American public enemy #1 in the history of the US, and what did he do to try to change his identity?
What is the name of the person falsely accused of being involved in the Madrid Bombing? What was the reason for the mistake?
What is the name of the person falsely accused of being involved in the Madrid Bombing? What was the reason for the mistake?
What is the simplest fingerprint pattern?
What is the simplest fingerprint pattern?
What are plastic prints?
What are plastic prints?
What are patent fingerprints?
What are patent fingerprints?
What are latent prints?
What are latent prints?
Name three uses of fingerprints.
Name three uses of fingerprints.
Which prints are visible to the naked eye?
Which prints are visible to the naked eye?
Which prints are invisible to the naked eye?
Which prints are invisible to the naked eye?
Is it possible to alter fingerprints?
Is it possible to alter fingerprints?
Describe three methods previously used by criminals to try to alter their fingerprints.
Describe three methods previously used by criminals to try to alter their fingerprints.
How many points of similarity are needed in the US?
How many points of similarity are needed in the US?
What are dactylograms?
What are dactylograms?
What is dactyloscopy?
What is dactyloscopy?
KOALAS have fingerprints that more closely resemble humans than CHIMPANZEES.
KOALAS have fingerprints that more closely resemble humans than CHIMPANZEES.
What is the reason why even identical twins have different fingerprints?
What is the reason why even identical twins have different fingerprints?
What is a Loop?
What is a Loop?
What is an Arch?
What is an Arch?
What is the most common type of fingerprint pattern?
What is the most common type of fingerprint pattern?
What is a Ridge Impression/Ridge Pattern?
What is a Ridge Impression/Ridge Pattern?
Who discouraged the idea that everyone has a different arrangement of patterns on their fingers that do not change with time?
Who discouraged the idea that everyone has a different arrangement of patterns on their fingers that do not change with time?
Who developed the classification system for fingerprints?
Who developed the classification system for fingerprints?
Who was credited with solving the first murder using fingerprints?
Who was credited with solving the first murder using fingerprints?
Can fingerprints be taken from a dead body?
Can fingerprints be taken from a dead body?
What makes our fingertips moist and able to grip better?
What makes our fingertips moist and able to grip better?
Describe the basal layer.
Describe the basal layer.
Study Notes
Fingerprints and Identification
- iPhone 5S and safes utilize fingerprint technology for security.
- Fingerprint identification is highly reliable; no two individuals have the same fingerprints, and they remain unchanged over time.
Fingerprint Patterns
- Three primary fingerprint patterns and their percentages:
- Loops (65%): Includes Radial and Ulnar sub-patterns.
- Whorls (30%): Divided into Plain (24%), Central Pocket (2%), Accidental (0.01%), and Double (4%).
- Arches (5%): Contains Tented (1%) and Plain (4%).
- Simplest pattern is Arches; the most common is Loops.
Formation and Characteristics of Fingerprints
- Formed at the 10th week of gestation; patterns arise as the basal layer folds and bends new skin cells.
- Fingerprints are unique characteristics, making individual identification systematic and permanent.
Historical Figures and Cases
- John Dillinger attempted to change his identity by burning off his fingerprints with acid.
- Brandon Mayfield was falsely accused in the Madrid Bombing due to similarity in fingerprints with the actual perpetrator.
- Alphonse Bertillon credited with solving the first murder using fingerprints.
Types of Fingerprints
- Plastic Prints: Indentations made in soft materials.
- Patent Fingerprints: Visible prints left in colored substances.
- Latent Prints: Invisible prints formed by sweat and oils.
Criminal Techniques and Alteration of Fingerprints
- Fingerprints can be altered; however, attempts can render them more unique.
- Criminals have used methods like applying acid, surgical removal, or flipping fingerprints during surgery to try and alter their prints.
Fingerprint Analysis
- In the U.S., 12 points of similarity are required for identification.
- Dactylograms refer to fingerprints, and dactyloscopy is the study of fingerprint identification.
Genetic and Biological Aspects
- Koalas have fingerprints resembling those of humans more than chimpanzees.
- Identical twins possess different fingerprints due to variations in blood flow.
- Microscopic sweat pores on fingertips help improve grip.
Notable Figures in Fingerprint History
- William Herschel recognized the unique arrangement of fingerprints.
- Sir Francis Galton and Sir Edmund Richard Henry developed a fingerprint classification system.
Fingerprint Recovery
- Fingerprints can be successfully retrieved from deceased individuals using chemical treatments or surgical methods.
- The basal layer of skin is crucial for fingerprint formation, producing new skin cells where the prints develop.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of fingerprints with this quiz based on Chapter 6 of Forensics. Learn about the reliability of fingerprint identification and discover new technologies that utilize fingerprints. Explore the different patterns of fingerprints and their characteristics.
