CSA 1 - Latent Fingerprints

Evidence prints r what?

Fragile (use slight handling amount since prints can degrade)

Collect what?

Printed object

Photo powdered print b4 what?

Collection

Use clean gloves 2 do what?

Handle evidence

Your prints/DNA r transmitted by what?

Gloves if touching stuff (nose scratch)

2 identify object dusted,_____have best latent prints:

Smooth surfaces

2 identify object dusted, 4 latent prints exam what?

Windows, mirrors, glasses, door handles, doors

Position print powder/brush/lift tape within object reach w/ what?

Use powder color 2 contrast w/ item background w/ print collection, backing material color contrast w/ print powder color

2 gently powder on object w/ manufacturer’s development process instructions, pour small powder amount on what?

Clean paper piece/jar lid

2 gently powder on object w/ manufacturer’s development process instructions, lightly dip brush in what?

Powder

2 gently powder on object w/ manufacturer’s development process instructions, tap brush light 2 cause what?

Excess powder 2 fall off brush on paper

2 gently powder on object w/ manufacturer’s development process instructions, brush printed object w/ what?

Curve strokes 2 follow print natural lines

2 gently powder on object w/ manufacturer’s development process instructions, don’t blow on what?

Surface since it will have DNA contamination

2 document latent prints, each photo has what?

Scale, ID label, always shoot locale photo’s w/ 1-2-1/close-up photos

Evidence label:

Label print lift card w/ initials, ID #, date, time, evidence #/description, record info on card back w/ lift print

Evidence #:

Each piece has unique # 2 mirror evidence placard #

Evidence description:

Type, locate print collected, print orientation 2 north/prominent nearby object (fingerprints on telephone receiver), brief diagram of print locale on object depicted w/ “x”

2 lift latent print, remove piece of what?

Tape lift

2 lift latent print, if pre-made tape lift used, do what?

Open tape lift/remove protective seal over tape’s sticky part

2 lift latent print, if contact paper used, remove what?

Protective backing that covers adhesive paper

2 lift latent print, press sticky side of tape lift 2 what?

Developed print (firm-gentle pressure 2 not smear print)

2 lift latent print, place lift tape sticky side 2 what?

Cardstock (protect print by pressing lift tape 2 card stock 2 not smear print)

2 package latent print, place print in what?

Container

2 package latent print, multiple print lifts r placed in what?

Same container

2 package latent print, submit all prints 2 what?

Lab (don’t attempt 2 determine what lifts r suitable 2 compare)

2 package latent print, if print surface that may contaminate fingerprint brush/brush w/ what?

Physiological fluid/controlled substances (don’t use them on subsequent items until decontaminated)

2 package latent print, collect item w/ what?

Found print

2 package latent print, if print moist, allow what?

2 dry b4 collection

2 package latent print, when packing item w/ developed print, be sure 2 what?

Transport container made w/ paper + lg enough 2 hold item w/o print damage

2 package latent print, place item w/ print, print side-up, in what?

Container while protecting print from being touched (secure item so print isn’t moved/disturbed during transport)

2 package latent print, seal container w/ what?

Evidence tape seal