Multi-factor biometric authentication flow integrating MNO, CBVMP, and CA systems with liveness detection and face matching verification. The architecture routes identity verification through OTP validation, certificate authority token exchange, and SDK-based facial recognition with signature verification. This pattern demonstrates secure identity proofing aligned with CBVMP phase 2 standards, protecting against spoofing and unauthorized access. Fork this diagram on Diagrams.so to customize encryption key management, CA integration points, or add your own verification logic. The separate encryption key per MNO ensures provider-specific security isolation while maintaining interoperability across certificate authorities.