Biometrics
Biometric authentication, such as fingerprint or Face ID, provides a fast and secure way for users to authenticate within a React Native application without entering a password.
Installing a Biometrics Library
Checking Biometric Availability
Prompting for Biometric Authentication
Using Biometrics with Keychain Storage
Biometric authentication is often combined with react-native-keychain, requiring successful biometric verification before sensitive stored credentials can be accessed.
Handling Devices Without Biometric Support
Always provide a fallback authentication method, such as a PIN or password, for devices or users who do not have biometric hardware available or have not enrolled biometric data.
Security Considerations
Biometric authentication verifies the user’s identity locally on the device but does not, by itself, authenticate with your backend server, requiring it to be combined with secure token management.
Conclusion
Implementing biometric authentication using react-native-biometrics, combined with secure storage, provides a fast and secure login experience for React Native applications on supported devices.
