What is Liveness Detection?
Liveness detection tells the difference between a real person who’s physically present and a spoof (photo, video replay, mask, 3‑D model). Liveness engines detect fakes with texture cues, motion parallax, challenge‑response prompts and sensor telemetry. Passive checks let the UX flow, but switch on active checks for greater assurance when the risk is higher.
Program shape: run liveness before comparing the selfie to the ID image, fail fast on easily detected spoofs, rotate prompts so pre‑rendered clips can’t work. Adjust your thresholds risk‑based and log the quality scores for audits. Layer with document authenticity for a combined flow—our liveness checks combine naturally with end‑to‑end identity verification.
