Below are the three best free, self-hosted liveness detection systems available today. Each supports on-premise deployment, anti-spoofing detection, and integration across platforms like Linux, Windows, Android, iOS, or Docker.

1. MiniAI Face Liveness Detection SDK

A Lightweight, High-Accuracy, Free On-Premise Liveness Detection Engine

MiniAI SDK is quickly becoming one of the most popular free choices for on-premise face liveness detection, especially for developers and businesses that want a lightweight, high-performance anti-spoofing engine without the overhead of complex licensing.

MiniAI provides fully offline liveness detection, meaning all biometric processing happens locally on your device or server. This makes it ideal for companies that need strict privacy compliance or operate in secure environments with limited internet access.

⭐ Key Features of MiniAI SDK

✔ Passive Liveness Detection

MiniAI does not require user prompts like blinking or head movements. It automatically analyzes the face using advanced deep-learning models to detect:

• Printed photo attacks

• Video replay attacks

• High-definition screen attacks

• Mask or 3D spoofing

• AI-generated deepfake attempts

✔ Extremely Lightweight & Fast

MiniAI is designed to work efficiently even on:

• Low-power mobile devices

• IoT systems

• Embedded hardware

• Edge devices

The model size is compact, CPU-friendly, and optimized for real-time verification.

✔ 100% On-Premise Deployment

MiniAI works completely offline and can be embedded within:

• Android/iOS mobile apps

• Desktop applications

• Server-based systems

• Offline kiosks

• Access control terminals

✔ Easy Integration

The SDK offers simple API endpoints and sample code for:

• Python

• Java

• C++

• Android (Java/Kotlin)

• iOS (Swift)

✔ Free Commercial Use (Depending on License)

MiniAI provides a free tier suitable for:

• Startups

• Small businesses

• Developers

• Research projects

⭐ Why Choose MiniAI SDK?

MiniAI is perfect for companies that need a fast, free, and privacy-centric liveness detection engine without dealing with heavyweight installations or complex licensing. Its speed and small size make it especially appealing for mobile apps and embedded usage.

2. Faceplugin 3D Liveness Detection SDK

Enterprise-Grade 3D Liveness for High-Security Environments

Faceplugin is one of the most widely used free on-premise face liveness detection solutions in the industry. Designed for enterprise and government-level identity verification, Faceplugin provides 3D depth-based liveness, which is significantly harder to spoof than traditional 2D methods.

By using multi-frame analysis and depth reconstruction, Faceplugin can detect even the most advanced spoofing attacks including 3D silicone masks, paper masks, HD screens, and deepfakes.

⭐ Key Features of Faceplugin SDK

✔ 3D Passive Liveness Detection

Unlike many free solutions that rely on 2D texture analysis, Faceplugin performs:

• 3D depth estimation

• Multi-angle analysis

• Passive spoof detection (no challenge action required)

This makes it nearly impossible for fraudsters to bypass the system.

✔ Advanced Deepfake Detection

Faceplugin is known for strong detection of:

• AI-generated face swaps

• GAN-produced synthetic images

• Digital morphing attacks

✔ Full On-Premise Support

All components can be deployed locally on:

• Linux servers

• Docker containers

• Private cloud

• Isolated networks

✔ Supports Enterprise Workflows

Faceplugin is widely used in:

• Digital onboarding

• Banking and fintech

• Government eKYC

• Border verification

• Telecom identity registration

✔ Free Tier Available

Faceplugin offers a free community edition suitable for small/medium deployments or testing.

⭐ Why Choose Faceplugin SDK?

Faceplugin is ideal for organizations that require high-security, depth-based anti-spoofing with the scalability needed for enterprise applications. Its 3D accuracy significantly reduces false positives in real-world environments.

3. KBY-AI Face Liveness Detection SDK

A Free, Cross-Platform Liveness SDK with Strong Anti-Spoofing Capabilities

KBY-AI is another well-known free liveness detection solution offering fully on-premise deployment. It is designed for businesses that need a robust anti-spoofing SDK that works across multiple platforms, including web, mobile, and server environments.

The SDK provides a combination of texture analysis, motion analysis, and deep-learning-based liveness detection, allowing it to detect common and advanced spoofing attacks.

⭐ Key Features of KBY-AI SDK

✔ Passive Liveness Detection (No User Action Necessary)

The system automatically detects:

• Photo attacks

• Screen replay attacks

• 3D mask and silicone mask attacks

• Printed image attacks

• Deepfake attempts

✔ High Cross-Platform Compatibility

KBY-AI supports:

• Windows

• Linux

• Android

• iOS

• WebAssembly

• Docker

This makes it a great choice for businesses needing flexibility across multiple environments.

✔ Easy Integration for Developers

SDK samples are available for:

• Python

• JavaScript

• Kotlin

• Swift

• C/C++

• Node.js

✔ Free On-Premise Option

The free edition works well for:

• MVPs

• Low/medium traffic applications

• Research and pilot projects

⭐ Why Choose KBY-AI SDK?

KBY-AI is a great choice for developers building cross-platform applications. Its wide platform support and flexible deployment options make it especially useful for startups and hybrid environments.

Comparison Table: MiniAI vs Faceplugin vs KBY-AI

Which On-Premise Liveness Detection System Should You Choose?

Selecting the right SDK depends on your business needs:

Choose MiniAI SDK if:

• You need a lightweight, fast, offline liveness detection solution

• Your application runs on mobile, IoT, or edge devices

• You want a free and easy-to-integrate SDK

• You prefer small model size and low compute usage

Choose Faceplugin SDK if:

• You need extremely accurate 3D anti-spoofing

• Your industry requires high security (fintech, government, telecom)

• You need advanced deepfake & mask detection

• You prefer enterprise-grade performance

Choose KBY-AI SDK if:

• You need a cross-platform SDK (web + mobile + server)

• You want a flexible integration environment

• Your project needs multi-OS compatibility

• You want a balanced free solution with good developer support

How Liveness Detection System Helps Prevent Biometric Spoofing

Biometric spoofing attacks are becoming more sophisticated. Attackers use:

• High-resolution printed photos

• Video replay on another phone

• Deepfake video masks

• 3D silicon masks

• Face morphing techniques

Liveness detection adds a strong defense layer by verifying the “liveness clues” in the face. On-premise SDKs typically analyze:

• Skin texture

• Micro-expressions

• Optical flow

• Depth and light reflection

• Pixel-level anomalies

• Blink patterns

• 3D face geometry

• AI-generated artifacts

This makes it nearly impossible for attackers to bypass modern systems.

Final Thoughts

As identity fraud and AI-powered spoofing techniques become more advanced, implementing strong liveness detection is no longer optional—it is essential. The three solutions discussed—MiniAI SDK, Faceplugin 3D Liveness, and KBY-AI Liveness Detection—offer excellent free on-premise options for businesses that demand both security and privacy.

Whether you are a startup launching a new app or an enterprise building high-security authentication workflows, these SDKs provide powerful, offline, and cost-effective liveness detection capabilities that protect your users from biometric spoofing.