Biometrics examines distinctive biological and behavioral signals to help distinguish real media from synthetic content. It includes natural rhythms such as breathing, blinking, and heart rate, alongside facial movements, microexpressions, speech cadence, and vocal patterns. section 4.4
These signals can expose subtle differences that visual artifacts miss, but they are not a guaranteed test. Newer generative models increasingly mimic human behavior, contributing to an ongoing contest between media creators and detectors. section 4.4
Synthetic-media analysis can combine biometrics with:
- Visual artifact analysis, which looks for anatomical or textural inconsistencies. section 4.4
- Contextual checks, including reverse image searches, metadata analysis, and source-credibility checks. section 4.4
