What is a liveness check? How liveness detection works
Last updated 27 October 2026
A liveness check confirms that a real, present person is taking a selfie — not a fraudster holding up a photo, a screen, a mask or a deepfake. It is what stands between a stolen ID photo and a passed identity check. Here is how liveness detection works and where it fits.
What a liveness check actually does
When someone verifies their identity, they take a short selfie or video. A liveness check analyses it for the signals of a genuine, live human — rather than a printed photo, a picture on a screen, a 3D mask or an AI-generated face. If it is a real person, the check passes; if it looks spoofed, it fails.
Liveness vs face match
- Liveness — confirms the selfie is a real, present person (anti-spoofing).
- Face match — compares that face to the photo on their ID.
- Run together, they prove the person is live and is who their ID says.
Passive vs active liveness
- Passive — works from a single selfie with no actions required; fast and low-friction.
- Active — asks the person to blink, turn or follow a prompt.
- Both aim to defeat photos, replays, masks and deepfakes.
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How a liveness check works, step by step
- 1
The person consents
A liveness check uses biometric data, so the person approves it first and the approval is recorded.
- 2
They capture a selfie or short video
On their phone, the person takes a selfie or a brief video in the verification flow.
- 3
Liveness is assessed
The capture is checked for signs of a genuine, present person versus a photo, screen, mask or deepfake.
- 4
Face match confirms identity
The live face is compared to the photo on the person’s ID, so the result ties them to their identity document.
Why it matters in Kenya
Stolen and borrowed IDs are a common fraud vector in onboarding. A liveness check with face match means an attacker cannot pass simply by holding up someone else’s ID photo — the person must be genuinely present, making impersonation far harder.
How Verifisha uses liveness
As part of identity verification, Verifisha can run a face match with a liveness check: the person takes a short selfie, and we confirm it is a real, present person and that their face matches their ID. It is consent-led and runs only where this method is used.
Exactly which liveness method (passive or active) runs depends on the verification flow in use. Confirm current coverage with Verifisha.
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Frequently asked questions
What is a liveness check?
A liveness check confirms that a real, present person is taking a selfie — not a photo, screen, mask or deepfake. It is used in identity verification to stop impersonation, usually alongside a face match to the person’s ID.
How does liveness detection stop deepfakes?
It looks for the signals of a genuine live person and flags artefacts of photos, replays, masks and AI-generated faces. That makes it much harder to pass a check with a deepfake or someone else’s image.
What is the difference between liveness and face match?
Liveness confirms the selfie is a real, present person; face match compares that face to the ID photo. Together they prove the person is both live and who their ID claims.
Is a liveness check consent-led?
Yes. It uses biometric information, so the person approves it before it runs and the approval is kept on record. It is used only to confirm identity and prevent fraud.
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