L1: elimination and criminal prints

Question 1

what are elimination prints

Answer 1

a set of prints obtained by consent

Question 2

who are elimination prints taken from

Answer 2

from victims of a crime scene
- witnesses
- employees
- family members
- other individuals

Question 3

why are elimination prints taken

Answer 3

• good practice
• assists with prompt and accurate examination of all crime scene impressions found
  -> crime scene impression = unknown source
  -> elimination prints = known source
• ICE [incriminate, corroborate, eliminate]

Question 4

elaborate on ICE for why elimination prints are taken

Answer 4

I = incriminate - puts the suspect at the scene or on position of that item
C = corroborate - the witnesses story or victims explanation of occurrences
E = eliminate - the victim and other people not involved

Question 5

examples of when elimination prints would be taken

Answer 5

• stolen vehicle - who else drives this vehicle or is frequently in it?
• B&E - who else lives with you or is over often/shortly before time of offence?
• threatening letters/fraud - who handled the item prior to police showing up?
• robbery - who were the employees working? were there other people in the store at the time of the offence?

Question 6

how to properly take a set of elimination prints

Answer 6

• powder tips of fingers lightly with black powder
• flat lay of all 4 fingers and thumb onto sticky side of a shipping label
• label placed onto clear acetate sheet
• info to include = date, individual’s name, person who took thee prints’ name, incident #, which hand the print comes from

Question 7

how are prints obtained from arrested individuals

Answer 7

• f.prints taken under the identification of criminals act [whether consents is granted or not]
• f.prints shall be provided once charged with an offence [regardless if convicted or not]
• any amounts of reasonable force allowed to be used to obtain f.prints, if person resists to provide them
• methods of obtaining prints = rolled ink, LiveScan

Question 8

how are prints from arrested individuals used

Answer 8

prints are compared only to the case in question

Question 9

how are prints from arrested individuals stored

Answer 9

they are not kept on AFIS and compared further to outstanding cases

a request to TPS must be put through in order to have the prints destroyed

Question 10

rolled ink method of obtaining prints [2 types]

Answer 10

1. C-216 RCMP form [did in PRA]
   - black ink pad
   - roll each finger one by one in ink pad and transfer on to form
   - prints look like squares
   - flat lays – taken similarly to elimination prints, 4 fingers then thumb
   - palms on back of page
2. glass and paper method
   - ancient
   - squirting ink onto glass, and using it as ink pad
   - getting ink onto fingers and printing it onto paper

Question 11

LiveScan method of obtaining prints

Answer 11

• laser scanner, scans impression
• very sensitive
• quick
• tells you if there is an error
• outlines boxes so that fingers are placed correctly
• can change settings for amputations and skin diseases