Quiz 4 RICHARD Flashcards
Does everyone have the same Fingerprints ?
No everyones fingerprint are unique
where were fingerprints used as identifying marks ? (Country)
china
when was fingerptinting introduced in north amaerica
late 19th century
what is the genrating layer in skin that creates friction ridges?
Basal layer
why are fingerprints useful for identifcation purposes
Unique
Permanent:
Easy to compare
Admissible in court ect..
latent print
left on a surface unintentionally
not immediately visible to the naked eye.
created when the friction ridges on the fingers deposit sweat and oil onto a surface, leaving behind a hidden impression of the ridge pattern.
patent print
visible fingerprint impression left on a surface through the transfer of oils, sweat, or other substances from the ridges on a person’s fingers.
Patent prints are different from latent prints, which are not immediately visible to the naked eye and require additional processing to be made visible.
3D Print
to create 3D prints of fingerprints using specialized 3D scanning and printing technology. This technology allows for the creation of high-resolution replicas of fingerprints, which can be used for a variety of purposes, including forensic investigations, biometric identification, and security applications.
How much water is in eccrine sweat?
98.5 - 99.5%
what are biometrics ?
refers to using unique biological measurements or featuresto identify individuals.
uses the unique characteristics of a person’s fingerprints to identify and authenticate them
Anthropometry was the first method of criminal identification usingbiological measurements.•
Fingerprints replaced anthropometry as a more reliable means ofindividualization
what was the first juristiucion to utilise AFIS?
San Francisco Police was the first agency to use AFIS routinely
does AFIS make a determination on a fingerprint
No ( False question)
what happens to fingerprtint on Porous substrate
absorb into the substrate
what happens to fingerprtint Non- Porous substrate
more susceptible to damage because the fingerprint residue resides on the out- ermost surface
Fingerprints left on items are they robust or sensitive?
Fingerprints left on items can be both robust and sensitive:
Fingerprints are a highly robust form of biometric identification
remain stable and consistent over time.
Once a fingerprint has formed, its ridges and minutiae points tend to remain the same, unless the skin is damaged or undergoes significant changes due to injury or disease.
Sensitivity of fingerprints to environmental factors can make them more or less robust in certain situations.
For example, fingerprints left on porous substrates like paper or fabric may be more susceptible to fading or degradation over time, while fingerprints left on non-porous surfaces like metal or glass may be more durable and longer-lasting.
