A high-performance biometric authentication and secure storage library built on Nitro Modules for React Native's New Architecture. Unlike bridge-based libraries, Biolink uses Nitro's JSI implementation for near-zero latency native communication.

@gmemmy/react-native-biolink

npm install @gmemmy/react-native-biolink react-native-nitro-modules
# or
pnpm add @gmemmy/react-native-biolink react-native-nitro-modules
# or
yarn add @gmemmy/react-native-biolink react-native-nitro-modules

• Bridge-Free: Direct JSI communication with near-zero latency
• Hardware-Backed Security: Secure Enclave (iOS) and TEE Keystore (Android)
• Biometric Authentication: Face ID, Touch ID, and device credentials
• Secure Storage: Platform-specific secure storage (iOS Keychain, Android Keystore)
• PIN Authentication: Fallback PIN with lockout protection
• Digital Signing: Hardware-backed RSA key generation and signature creation
• Cross-Platform: iOS and Android support
• React Hooks: Built-in useAuth hook for easy integration

• FIDO2/WebAuthn Passkeys: Full passkey support with RP ID validation
• Analytics & Observability: Built-in event tracking and audit logging
• Expo Config Plugin: Zero-config setup for Expo projects

• React Native ≥ 0.74 (New Architecture required)
• react-native-nitro-modules
• iOS 13+ (Secure Enclave)
• Android API 23+ (Biometric API)

For complete usage examples, API documentation, and advanced features, see the 📖 Package Documentation.

• 📖 Full API Documentation - Complete API reference, examples, and advanced usage
• 📱 Demo App - See the library in action
• 🐛 Issues - Report bugs and request features
• 💬 Discussions - Ask questions and share ideas
• 📋 Contributing Guide - How to contribute to the project

MIT License - see LICENSE for details.