Packaging fingerprints, particularly those on certain types of surfaces, requires careful handling to preserve the evidence. The specific method often depends on the nature of the surface bearing the print.
Packaging Fingerprints on Porous Materials
For items made of porous materials, such as paper or cardboard, fingerprints are partially absorbed into the surface. This makes them less susceptible to being completely rubbed off during handling.
According to forensic guidelines:
- Porous materials with fingerprints are generally easier to handle because the prints are less likely to be destroyed by casual contact compared to prints on smooth, non-absorbent surfaces.
- To properly package these items, recommended containers include:
- Paper bags: Standard paper evidence bags are suitable.
- Manila envelopes: Large envelopes can be used for flatter items.
- Boxes: Cardboard boxes are appropriate, especially for larger or three-dimensional items. If using a box, it's crucial to stabilize the item inside to prevent it from moving around during transport, which could still potentially damage the print or the item itself.
Important Consideration:
- Plastic bags are not recommended for packaging items with fingerprints on porous surfaces. Trapped moisture within a plastic bag can potentially damage the evidence, including the latent print.
This packaging approach helps protect the fingerprint from smudging or degradation until it can be further processed and analyzed in a laboratory.
