Which item does not require a special fingerprint press and can be processed at the scene by an officer?

• A. Metal key
• B. Soda can
• C. Glass pane
• D. Ceramic coffee cup

Answer: (B)

Processing latent fingerprints on scene depends on the surface and the techniques you have in the field. Non-porous surfaces like metal respond well to basic field methods—dusting with ordinary fingerprint powder, brushing lightly, and lifting with tape. A soda can is ideal because its smooth metal surface readily accepts these standard techniques, so you can process it right there without needing a specialized fingerprint press or chamber. The other items, while possible to process, generally present more handling challenges or residues that would push you toward more controlled methods or equipment not typically available in the field. So, the soda can is the item that fits on-scene processing with standard techniques and no special press.