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Latent Fingerprints

based on 56 ratings
Author: Jake Friesen

Superglue fuming is a very common technique used by forensic specialists across the world to develop fingerprints that can't be immediately seen with the naked eye, known as latent fingerprints. The fumes from the superglue will adhere to the amino acids left behind by the fingerprint secretions. This is a valuable technique that can easily be replicated.

Problem:

How does a person develop latent fingerprints on a non-porous object?

Materials:

  • Small, plastic container (approximately 8”X10”) with lid
  • Bottle of superglue
  • Clear plastic wrap
  • Two aluminum tart shells
  • Lamp with a shade
  • Compact disc

Procedure:

  1. Run your hand through your hair and place a few fingerprints on the compact disc
  2. Place the disc in the center of the plastic container
  3. Place seven drops of Superglue in one of the aluminum tart shells and place it in the corner of the plastic container.
  4. Fill the other aluminum tart shell with hot water and place it in the opposite corner of the plastic container.
  5. Cover the entire plastic container with plastic wrap and then place the lid over of that
  6. Place the container on top of a lamp for 15 minutes. (If the superglue has fumed properly, you will notice that the fingerprints have turned white. Allow to dry for a minimum of three hours.)
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