Minutiae of Prints

What causes fingerprints to be left behind when we touch things?

• sweat from our pores

• dirt from our skin

• oils from our skin

• pressure from our skin when we touch things

Most common type of fingerprint pattern: least common pattern

• loops : arches

• arches : loops

• whorls : loops

• loops : whorls

3D impression left in clay or wax

• patent

• latent

• plastic

• talent

Which of the following can be used to develop latent prints? (choose all that apply)

• super glue

• Nark II

• magnetic powder

• Ninhydrin

What is the name of the ridge characteristic labeled A?

• bifurcation

• ridge ending

• island

• delta

What is the name of the ridge characteristic labeled C?

• bifurcation

• ridge ending

• island

• delta

What is the name of the ridge characteristic labeled D?

• bifurcation

• ridge ending

• island

• delta