Module Five Flashcards
When were fingerprints first used
In court - 1902
Who set up the first fingerprint collection and classification system
Sir Edwards Henry
Who is accredited for the introduction of fingerprints
Sir Henry faulds. Edward Henry and sir Francis Galton were first to devise a means of classification
Terminology
Fingerprints- from individuals/ origin known
Fingermarks - from items or scenes - origin unknown
Ten prints - the rolled impressions of fingerprints at a police station
Livescan - capture of fingerprints + Palm images w/o ink using electro optical computerised device
What is composition and deposition of fingerprints
Deposition - sweat, fatty acid natural to body
Composition - blood or dirt
What are the types of latent prints
Visible prints
Invisible prints
Moulded prints
Etched prints
How can prints be detected
High intensity light sources
Chemicals - fuming
Dust/ black powder
Ninhydrin ( chemical that reacts w amino acids produced by purple colours print)
Fingerprint enhancement w superglue vapour (vapour = cyanoacrylate )
What are the classifications for fingerprints
Arches - loops - whorls
Individual= ridge endings, Spurs, deltas
Loop most common type
Minutiae - unique// occurance of and position relative to each other
What are fingerprints made of ?
Made of friction skin, the surface is ridges and furrows,