Which of the following is NOT used to identify a person on FMV?

• A. Clothing
• B. Physical attributes
• C. Gait
• D. Temperature reading

Answer: (D)

In FMV identification, you rely on cues that are observable and can be distinctive across footage: clothing, physical attributes, and gait. Clothing helps because outfits, logos, or unique accessories can serve as identifiable markers tied to a person. Physical attributes like height, build, hair color, and visible scars add notable features that help distinguish individuals. Gait—the way someone walks—can be surprisingly distinctive even when the face isn’t visible, providing a behavioral biometric that can link sightings across scenes.

Temperature reading, by contrast, isn’t a reliable or practical identifier in standard FMV. Body temperature varies with health, activity, and environment and is not unique to a person. It also requires specialized equipment to capture, which isn’t part of typical video analysis. So temperature readings aren’t used to identify someone in FMV.