How can you identify a person on FMV?

• A. Gait and speed
• B. Facial expressions
• C. Clothing, physical attributes (sex, gait, disabilities, size), mannerisms, behavior, activities
• D. Temperature readings

Answer: (C)

Identifying someone in full-motion video relies on a mix of observable cues that stay recognizable across frames. Clothing provides distinctive, visible markers that help separate individuals in the scene. Physical attributes such as size and build, sex, gait, any disabilities, and overall appearance contribute useful biometric-like hints. Mannerisms and behavior—how a person moves, typical gestures, posture, and the kinds of activities they engage in—often carry a unique signature that persists even when clothing or lighting change. When you combine these cues, you get a more reliable basis for identification than relying on a single feature.

Gait and speed alone can be informative but are not enough on their own, since a person’s walk can vary with mood, injury, or purposeful alteration. Facial expressions are not reliable for identification because they change with emotion and can be obscured or masked. Temperature readings aren’t obtainable from standard FMV data.