1. How do WE Take Fingerprints? May 13, 2014

2. Susan M. Souder, a Baltimore County Circuit Judge, ruled that fingerprints would be inadmissible in the murder trial of Bryan Rose, reports the Baltimore Sun. Her ruling, according to sources, is based on criteria set forth in 2002 about what can be admitted as evidence in criminal trials.
Apparently, fingerprint evidence does not meet those standards.
Even though criminal trials have used fingerprint evidence for more than a century, it may not be the most accurate way of determining who committed a crime. Sources show that in 1905, an early fingerprint expert noted that, even though it can be assumed that no two people share a set of ten fingerprints, using partial or distorted fingerprints to solve crimes is a bit of a stretch.
And yet, during the next 102 years of crime-solving, investigators continued to use them.
What’s more, fingerprint experts are reportedly required to report their examinations as 100% certain-even when there’s a possibility of error.
Judge Souder allegedly declared she accepts the notion that no two people share full sets of fingerprints. But, as reports indicate, she believes smudged, smeared, or distorted fingerprints (the type found at crime scenes) are insufficient to link a person to an act.
In the Baltimore case, Rose could face the death penalty if convicted of the murder, the Sun reports. But the prosecuting attorneys were apparently shocked by Souder’s decision. In fact, Rose’s trial was postponed so that the prosecution could gather relevant evidence besides his fingerprints, which were found at the scene of the crime.
Although Souder’s ruling is unprecedented for a criminal trial, it’s not the first time fingerprint evidence has been called into question.

3. Do Now Answer the following question in your notes:
What do you think of this judge’s response to the controversy surrounding fingerprints? Was she correct in doing this, or was this too extreme?

4. Agenda Print Materials Other forms of identification Facebook
Altering fingerprints
John Dillinger

5. Arches Plain Arch Tented Arches Enters on one side and
Enter on one side of the print and exit on the other.
No deltas.
Plain Arch
Enters on one side and
exits on the other
Tented Arches
Spike in the center

6. Other characteristics
Delta - Triangular region located near a loop

7. Loops One delta Ridges that enter and leave on the same side.
Patterns named for radius and ulna bones.

8. Ulna vs. Radius Radius Ulna Bone connected to the thumb
Bone connected to the pinky

9. Loops One delta Ridges that enter and leave on the same side.
Patterns named for radius and ulna bones.

10. Whorl At least one ridge ridge that makes a complete circle.
Two deltas.

11. Whorls

12. Other characteristics
Core - center of a loop or whorl

13. Ridges Fingerprints are analyzed by the pattern of ridges and minutiae
Minutiae - points where the ridge structure changes

14. AFIS
AFIS is a computerized system capable of reading, classifying, matching, and storing fingerprints for criminal justice agencies. 

15. Tool Time
In your notebook, write the tool you would use to complete the projects listed below.
Cut a board in half
Put a nail in a piece of wood
Tighten a loose screw on a door
Sweep up a room
Loosen a tight bolt

17. Patent prints
Patent prints - visible prints found on a smooth surface

18. Latent prints
Latent prints - hidden prints caused by transfer of oils to a surface

19. Patent or Latent? Patent Visible No use of powder or other materials
Hidden
Must use powder or other type of material to find them

20. Print materials
Different materials are needed to take different prints

21. Print materials Chemical Use Reacts With Ninhydrin Paper Amino acids
Super Glue
Paper, glass, metal, skin
Black Powder
Glass, metals, wood
Sweat and oil

22. Blitz! Mirror Door Knob Metal countertop Gun Ransom note Baseball Bat
What type of material would be best for pulling fingerprint off of the following surfaces?
Mirror
Door Knob
Metal countertop
Gun
Ransom note
Baseball Bat

23. Other ID technology Digital scans Fingerprint readers Retina scans
Facial recognition technology

24. Facebook?
Facebook is entering the realm of facial recognition software.

25. Altering your fingerprints
Your fingerprints remain the same throughout life, except for disease or scarring

26. Altering fingerprints
These attempts are, for the most part, futile.
People do this for a number of reasons:
Prevent themselves from being caught
Immigration
Change of identity

27. Altering fingerprints
Can be done by surgery, self- mutilation, and natural processes
Surgery - surgical removal or replacement
Self-mutilation - Cutting off or burning off yourself
Natural processes - removal due to handling acids or rough items

28. John Dillinger Bank robber and notorious gangster in 1920’s Chicago.
Most wanted by the FBI
Removed his fingerprints by using pineapple acid and handling rough materials

29. John Dillinger Eventually caught and shot on the spot.
Caught due to fingerprint evidence.
How?

30. John Dillinger
The fingerprints that he had removed grew back. Something he was unaware of.

31. People born without fingerprints