Fingerprints (Analysis & Lifting)

Question 1

What is fngerprint analysis?

Answer 1

Look for the patterns - Arches, Loops, Whirls
* Arche - ridges starting on one side an end on the other
* Loops - enter on one side and exits on the same side, double loops (yin and yang symbol)
* Whorls - central pocket whorl (loop w/ whorl at end), plain (concentric circles)
* Combination - mix of those above

Question 2

What are Minutiae?

Answer 2

In dividual characteristics of fingerprints (150 per finger)
Multiple patterns present in the same hand

Question 3

What is the Database for fingerprints?

Answer 3

AFIS | database can only narrow options down, matches have to found manually

Question 4

(Lifting) Ridges

Answer 4

Formed by developmental noise int hte womb
Developed by 12 week period

Question 5

What is need to leave a print?

Answer 5

Matrix - sweat, oil, etc.
Substrate - surface where print is left | Porous (will absorb matrix), Non-porous (better for prints)

Question 6

What are Latent Prints?

Answer 6

Non-visible, can be made visible with dust (colour dependant on surface)
fluorescent can be used of multicolor surface
magnetic can be used for irregular surface

*Use tape to lift and place on clear surface