Fingerprinting Comic
Storyboard Text
- Hi! Today I will be explaining how fingerprint evidence can match a suspect to a crime scene.
- Fingerprint patterns are based off of two main components, the core and the delta.
- The three fingerprint patterns are known as the arch, loop, and whorl. However, there are different varieties of these patterns
- - a fingerprint is an individual characteristic- a fingerprint pattern remains unchanged during a person's lifetime
- Arch Types:1. Plain Arch2. Tented ArchLoop Types1. Radial Loop2. Ulnar Loop
- Arch patterns have ridges that enter from one side of the fingerprint and leave from the other side with a rise in the center!
- Whorl Types1. Plain Whorl2. Central Pocket Whorl3. Double Loop Whorl4. Accidental Whorl
- On the board, I listed the different types of patterns
- Loop patterns have ridges thatenter from either theright or the left andexit from the sameside they enter!
- Whorl patterns have at least oneridge that makes acomplete circuit. Looklike a bull’s-eye, withtwo deltas
- When considering different minutiae for fingerprint identification, experts use a 12 match guideline. The 12 match guideline means that if two fingerprints don't have at least 12 of the same minutiae, they are not a match. Fingerprints need to share at least 12 or more minutiae to be matched.
- Fingerprint Minutiae- Minutiae are points where print ridges come together or end; they are considered to be the “uniqueness” of an individual
- With these different characteristics in fingerprints, someone can possibly identify who was at a crime scene. However, fingerprints can be altered due to scars or disease. If this occurs, minutiae and ridge patterns may change as well.
- In conclusion, fingerprint evidence can be very helpful in identifying suspects of a crime, however, it has some flaws that make it unreliable. DNA evidence is usually more efficient when convicting someone of a crime.
- Thank you for participating in this lesson!
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