Face Liveness Detection API for Real-Time Human Verification

Verify real humans. Block spoofing. In under a second.

FacialProof is a face liveness detection API built to determine whether a real person is present, not a photo, video replay, mask, or synthetic face.

Designed for real-world conditions, fast onboarding flows, and developers who want control without enterprise friction.

👁️ Facial Recognition

Detect faces in real-time using your camera

Reference

Reference image

Results

200 OK Time: 245ms Size: 2.3 KB
{
  "success": true,
  "faces_detected": 3,
  "faces": [
    {
      "id": 1,
      "confidence": 0.95,
      "bounding_box": {"x": 150, "y": 200, "width": 300, "height": 350},
      "age": "27-29 years old",
      "emotion": "Happy",
      "gender": "Female"
    },
    {
      "id": 2,
      "confidence": 0.92,
      "bounding_box": {"x": 500, "y": 180, "width": 280, "height": 320},
      "age": "25-27 years old",
      "emotion": "Neutral",
      "gender": "Male"
    },
    {
      "id": 3,
      "confidence": 0.88,
      "bounding_box": {"x": 800, "y": 250, "width": 200, "height": 250},
      "age": "6-8 years old",
      "emotion": "Happy",
      "gender": "Male"
    }
  ]
}

Live Camera

🔒 Liveness Detection
Please follow the instructions below
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Starting verification…
Click “Start Camera” to begin

ID Document

Upload your ID document
Ready to start. Upload your ID document and start the camera.

🎭 Facial Emotion Recognition

Upload an image or use real-time camera for face shape analysis using advanced AI

Upload an image or start camera to begin face detection

Face Shape

Upload an image or start camera to detect face shape

Personal Attributes

Gender
Age
Primary Emotion
All Emotions
Face Angle

Face Measurements

Face Width
Face Height
Width/Height Ratio
Jaw Width
Forehead Width

Detection Info

Faces Detected 0
Confidence
Processing Time

🎤 Advanced Voice Emotion Detector

AI-Powered Real-Time Emotion Analysis

Click to start recording (3 seconds)
Audio Waveform
Frequency Spectrum

✔ Passive & active liveness ✔ Image or video input ✔ Privacy-first, GDPR-aligned

Why Developers Choose Our Face Liveness Detection API

FacialProof is the best Active & Passive Liveness Detection API for developers who need accurate liveness detection, validation, and matching with simple setup.

1. Capture the Face

The user captures a selfie image or short video using any web or mobile camera, no special hardware required.

Supported capture methods:

  • Web & mobile cameras: works across browsers, Android, and iOS, even on low-quality devices
  • Passive liveness (single image): fast, low-friction selfie verification
  • Active liveness (short video or challenge): blink, turn, or motion for higher-risk cases

2. Analyze for Live Presence

FacialProof evaluates biometric and behavioral signals to determine whether a real human is physically present.

The analysis includes:

  • Skin texture and depth cues to detect flat or displayed images
  • Natural motion and micro-movements that indicate live capture
  • Replay and injection detection for screen and camera feed attacks
  • Signals linked to synthetic or manipulated faces, including deepfakes

All checks run in real time with low latency.

3. Make a Trust Decision

FacialProof returns a clear, structured API result your system can act on instantly.

You receive:

  • Liveness outcome (pass / fail)
  • Confidence score
  • Risk indicators when additional verification may be needed

Use the result directly in onboarding, step-up verification, or access control, no manual review required.

Active and Passive Liveness Detections

We don’t just detect faces; we verify presence.

We provide the flexibility of Active and Passive Liveness to match your specific user experience and security requirements.

Passive & Active Liveness Detection

Use passive liveness for fast, low-friction verification with a single selfie.
Trigger active liveness (blink, turn, movement) only when higher assurance is needed.

Presentation Attack Detection (PAD)

Built to detect common real-world spoofing attempts, including:

  • Printed photos
  • Screen and video replays
  • Pre-recorded face videos
  • Basic 2D masks and paper attacks

Designed around ISO/IEC 30107-3 attack categories.

Deepfake & Synthetic Face Signals

Identifies visual and behavioral indicators associated with:

  • AI-generated faces
  • Face swaps
  • Manipulated or injected camera feeds

Focused on early risk detection, not marketing promises.

Real-Time, Low-Latency Processing

Optimized for fast decisions without slowing down onboarding or login flows, even on older devices and unstable networks.

Clear, Actionable API Outputs

Receive predictable, developer-friendly responses:

  • Liveness status
  • Confidence score
  • Optional risk indicators

No opaque scoring or hard-to-interpret results.

Privacy-First by Design

  • Stateless processing
  • No image storage
  • No biometric resale or model training
  • GDPR-aligned data handling

Built for teams that care about compliance and user trust.

The FacialProof Advantage

FacialProof.com is the easiest way to block deepfakes and bots. Our API is fast, accurate, and works on any device.

Real-World Use Cases Face Recognition API

FacialProof is used in environments where fake users create real risk:

  • Fintech & banking: stop account opening fraud, step-up verification for risky actions
  • Crypto & exchanges: block bots, prevent fake account farms, protect withdrawals
  • Gaming & marketplaces: reduce ban evasion, fake users, and abuse
  • Apps & SaaS: secure face login and prevent automated sign-ups

Developer-First Integration

One API. One Flow. Any Platform.

We understand tedious integration barriers. That’s why our Liveness Detection API shares the same logic across Python / JS / PHP / Java / Android / iOS.

import facialproof

result = facialproof.check_liveness(
    image,
    mode="passive"
)

if result.status == "REAL":
    proceed_with_onboarding()
else:
    trigger_step_up()

FacialProof vs. Established Liveness Providers

FacialProof is built as a liveness-first API, not a bundled identity or compliance platform.
While larger vendors prioritize enterprise workflows and multi-product suites, FacialProof focuses on accurate face liveness detection with minimal integration friction.

FeatureFacialProofMicrosoft Azure / AWS RekognitionOnfido / Jumio
Primary FocusLiveness detectionCloud & identity servicesFull KYC / ID verification
Liveness TypePassive-first, optional activeOften video or active-basedVideo + challenge-heavy
Typical LatencySub-second (real-time)Higher, multi-step flowsHigher due to review steps
Integration ModelSelf-serve APICloud configuration requiredSales-led onboarding
Pricing StyleUsage-based, transparentTiered / bundled pricingContracts & minimums
Compliance ScopeiBeta Level 2, GDPR-alignedMixed Level 1 / 2Level 2 (ID-centric)


Faster Than Azure Face API (In Practice)

Face liveness checks using Microsoft Azure Face APIs are often embedded in broader identity or video-based flows.
FacialProof is optimized for direct liveness decisions, reducing latency by avoiding unnecessary steps.


Lower Friction Than Enterprise KYC Platforms

Platforms like Onfido and Jumio are designed for regulated KYC workflows, which often means:

  • Video capture
  • Manual review paths
  • Longer setup cycles

FacialProof focuses strictly on presence verification, making it easier to deploy in product-led environments.


Transparent Pricing vs. Sales-Led Models

Some vendors, such as Mitek or Facia.ai, rely on quote-based pricing and bundled contracts.
FacialProof uses a pay-as-you-go API model, better suited for teams that want predictable costs as they scale.


Beyond Basic Face Recognition

Traditional face recognition providers like Luxand and IDEMIA focus primarily on identity matching.
FacialProof is designed to answer a different question first:

Is a real human present right now?

Liveness is treated as a core signal, not an add-on.


When FacialProof Is the Right Choice

FacialProof is a strong fit if you need:

  • Fast face liveness detection without heavy UX friction
  • Passive-first verification with optional step-up checks
  • A developer-controlled API, not a compliance bundle
  • Clear outputs you can automate against

If your primary need is document verification or regulatory KYC, enterprise platforms may be more appropriate. If your problem is spoofing, bots, and fake users, FacialProof is built for that layer.


Is FacialProof really one of the most accurate liveness detection APIs?

Yes. FacialProof is optimized for passive liveness, achieving industry-leading accuracy with extremely low false rejections in real-world conditions, including low-quality cameras and difficult lighting.


How do Active and Passive Liveness work together?


Do you store or reuse user photos?


How is FacialProof different from Azure, AWS, or KYC platforms?