WebAuthn/FIDO2

BMAuth Production Framework: Built a comprehensive WebAuthn/FIDO2 authentication framework for FastAPI that completely replaces traditional passwords with device-bound cryptographic keys. The system supports both platform authenticators (enabling users to authenticate with fingerprint or face recognition on their primary devices) and cross-device flows (allowing users to authenticate on new devices by scanning QR codes from their registered device). Designed intuitive registration and authentication ceremonies that happen in separate, dedicated windows, creating optimal workflows that guide users through the cryptographic processes without exposing technical complexity. The framework significantly reduces security attack surfaces by eliminating phishing vulnerabilities (no credentials to steal), credential reuse attacks (each device has unique cryptographic keys), and password-based breaches entirely.

Seamless Biometric Authentication UX: Tackled the challenge of making WebAuthn's complex cryptographic operations feel seamless to end users. Created registration flows that guide users through setting up biometric authentication with clear instructions and visual feedback. Implemented authentication workflows that leverage device biometrics as the primary authentication method, providing instant access without typing passwords while maintaining security through device-bound private keys. Addressed browser compatibility challenges by detecting WebAuthn support, handling different browser implementations, and ensuring consistent user experiences across Chrome, Firefox, Safari, and Edge. The result is a passwordless authentication system that delivers both superior security and improved user experience compared to traditional password-based authentication.