What Is Liveness Detection? A Practical Guide

Liveness detection checks that a real human is present — not a photo, replay, or deepfake. Here’s how it works and what it protects against.

Liveness detection is a security technique that checks whether the face in front of a camera belongs to a live person in the moment — not a printed photo, a video replay, or a synthetic deepfake.

Why it matters now

As AI-generated media gets cheaper, it’s easier to create fake profiles. Liveness raises the cost of fraud and helps platforms and communities protect trust.

Active vs passive liveness

• Passive liveness looks for subtle cues (lighting, texture, motion) without prompting the user.
• Active liveness asks the user to follow prompts, making replay attacks harder.

What Prove I'm Real does

We use a short liveness session and then mint a time-bound share link. The badge preview is server-rendered, so it can’t be forged by editing an image.