Northern Virginia Criminal Justice Academy (NVCJA) Practice Exam

Which item does NOT require special fingerprint processing equipment and can be processed on scene?

1. Glass Pane

2. Soda Can

3. Ceramic Coffee Cup

4. Plastic Bag

The correct answer is: Plastic Bag

The correct answer is that a plastic bag does not require special fingerprint processing equipment and can be processed on scene. When it comes to fingerprint analysis, certain surfaces can yield better results based on their material and the method used to collect prints. Plastic bags are particularly conducive to fingerprint processing using powders, dusting, or even chemical methods depending on the situation. They are often flexible and can be handled without significant risk of damage to latent prints. This makes them practical for field examination, allowing for immediate processing without the need for specialized equipment. On the other hand, items like glass panes, soda cans, and ceramic coffee cups often require more careful handling and specialized techniques. Glass and ceramic might require specific chemicals or equipment for optimal fingerprint collection due to their smooth surfaces, which can make adhering or lifting prints more challenging. Soda cans may also have complex textures and surfaces that complicate the extraction of fingerprints, typically benefiting from controlled environments and advanced techniques.