Fingerprints Flashcards
Chinese
Used fingerprints to sign legal documents as far as 3000 years ago
William Herschel
English servant required natives to sign contacts with an imprint of their right hand
Henry fails
Wrote that skin ridge patterns could be important in identification
System was rejected in favor of bertillion system
Alphonse bertillion
First systemic attempt at personal identification was devised
Portraita parle
Detailed description of the individual
Anthropometric
System of predict body measurements
11 measurements taken to include height length of foot
William west
Couldn’t be distinguished from inmate with same name by anthropemtry
Facts
No 2 people age the same exact point
Unchanged for the life of the individual
Have ridges that allow them to be systematically identified
Arch
Plain arch
Tented arch
Loop
Radial
Ulnar
Whorl
Plain
Central pocket
Double
Accidental
Percent of loops
60
Percent of whorls
35
Percent of arch
5
Plain arch
Ridges enter on side and exit on the other side
Tented arch
Similar to plain arch but have a spike in the center
Radial loops (right hand)
Loop opens toward the thumb (radius)
Ulnar loop (right hand)
Loop opens toward the little finger (ulna)
Loops
Must have one delta and one or more ridges that enter and leave on the same side
Whorls
Have at least one ridge and have at least 2 deltas
Accidental
More than 2 deltas
Plain whorl
If curved ridges touch the line
Central pocket
If none of the center core touches the line
Double loop
Made up of any 2 loops combined into 1 print
No deltas
Arch
1 delta
Loop
2 or more deltas
Whorl
Latent
Can’t see invisbile
Patent
Left behind ( blood)
Plastic
Mold (wax)
