FSC239Y5 Lecture Notes - Lecture 4: Ninhydrin, Iodine, Reagent
Document Summary
Requires some form of development: patent (visible impression) Composed of a combination of secretions and foreign materials. Require minimal development and must be photographed: plastic or mold impression leave 3d impression in soft material. Suitable surfaces for fingerprint development: general rule is: Fingerprints may be found on any surface w. sufficient size and surface continuity to disclose the necessary ridge characteristics in sequence. Example: rough surface, not going to retain required minutia or top of a pin, bc size doesn"t have enough area to give info: if using excuse not suitable to prints. Only true way to establish if suitable: test it out first. Fingerprinting process: 5 steps for fingerprinting, powder/process, label/mark, photos (overall, midrange, macro) In case fingerprint doesn"t retain, makes sure have backup. Overall: to show scene and where laptop is located in scene. Macro: the actual fingerprint or any other fingerprint you see there: notes - memo book/acetate, lift and retain.
