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Latent Print Processing Flashcards

7 cards from real CSI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Latent Print Processing flashcards as text

  1. In the ACE-V methodology for fingerprint comparison, what does the 'V' stand for?

    Answer: Verification

    Verification requires an independent examiner to repeat the Analysis, Comparison, and Evaluation steps to confirm or challenge the original conclusion.

  2. Which chemical reagent turns blue-black when it contacts starch and is sometimes used in document examination alongside latent print work?

    Answer: Iodine

    Iodine reacts with starch to form a blue-black complex, which is useful in document examination to detect starch-based adhesives or coatings.

  3. Magnetic powder differs from conventional fingerprint powder primarily because:

    Answer: It is applied with a magnetic wand instead of a brush, reducing smearing

    Magnetic powder is attracted to a magnetic wand applicator, which never physically contacts the surface and thus minimizes disturbance of delicate ridge detail.

  4. What is 'ridge dissociation' as observed in a latent print examination?

    Answer: Breakdown or scattering of ridge structure due to pressure, disease, or damage

    Ridge dissociation describes areas where ridges break apart or scatter, which can result from pressure distortion, skin conditions, or intentional alteration.

  5. When photographing a dusted latent print, what camera technique ensures maximum ridge detail capture?

    Answer: 1:1 macro photography with oblique lighting and scale in frame

    1:1 macro photography with oblique (raking) light reveals ridge topography, and including a scale allows accurate size reproduction in court.

  6. Which of the following is NOT a standard latent print pattern classification?

    Answer: Spiral

    The three standard Henry Classification pattern types are loops, whorls, and arches; 'spiral' is not a recognized classification category.

  7. A latent print on a fired cartridge case is difficult to process because:

    Answer: Heat and pressure during firing destroy and contaminate the print deposit

    The extreme heat and pressure generated during discharge degrade the organic and inorganic components of the print, making recovery challenging.