A fingerprint pattern that all ridges come in one side and exit the other is called a(n)
Arch
The most common type of fingerprint pattern is the
Loop
All loop patterns have at least two deltas.
False
A fingerprint pattern that has at least one ridge entering one side and exiting the same side is called a(n)
Loop
How large an area of a latent print is needed to make a positive comparison to an inked print?
large enough to find at least 8 - 12 ridge characteristics
A fingerprint left at the scene of a crime must be developed
it may last for years
What type of fingerprint would be placed in putty?
plastic
What would be the best way of visualizing a print found on a matchbook
ninhydrin
What type of fingerprint would be placed on skin?
latent
Ridge characteristics can be found in
fingerprints, palm prints, and foot prints
What would be the best way of visualizing a print found on a glass bottle?
dusting and lifting, superglue fuming
Minutiae
Ridge characteristics, fine structures
Visible Print
Prints left by a finger that has touched a colored materials
Latent Print
Invisible prints caused by body oils and proteins
Plastic Prints
Three dimensional prints made in soft materials
Ninhydrin
Reacts with amino acids
Bifurcation
When line forks
IAFIS
International Automated Fingerprints Informational System
What Step should be done before attempting to life any impression? Why is this step so critical?
Pictures are taken first, because if the prints get ruined by lifting them they still have the record of them
What would you use to visualize a print on a matchbox?
ninhydrin, because its a soft porous surface
What would you use to visualize a print on a Drinking Glass?
superglue, because its a hard surface
What would you use to visualize a print on a vinyl car seat?
powders, because it is a hard surface
What would you use to visualize a print on a cigarette?
Iodine because it is a soft surface
What would you use to visualize a print on a cloth shirt?
Silver Nitrate, if theres sweat on the shirt it will react
What would you use to visualize a print on human skin?
superglue
What would you use to visualize a print on a baseball bat?
powders because it is a hard surface