<h1>Risk-based authentication enables biometric-first passkey and in-app methods replacing OTPs, improving security and transaction speed.</h1> RBI guidance on risk-based authentication is implemented by Wibmo's Intelligent Authentication Suite, which replaces or supplements OTPs with biometric-first methods: device-resident passkeys using public key cryptography, merchant in-app biometric authentication with OTP fallback, and bank in-app SDK/API flows. A central orchestration engine routes authentication based on ACS capability, merchant needs, risk assessment and user behaviour to increase approvals, reduce fraud and improve customer experience while preserving private keys on customer devices.