MADRID–(BUSINESS WIRE)–Motive and Telefónica have successfully completed a proof of concept (PoC) showcasing seamless authentication using GSMA Open Gateway's Number Verification API. Debuted at the Google Cloud booth during Mobile World Congress Barcelona 2025, this solution enables secure authentication without SMS-OTPs, reducing fraud risks and improving user experience. The trial leveraged Motive Entitlement Server (ES) and Telefónica Spain's infrastructure to expose Open Gateway Number verification CAMARA API with TS.43 Operator Token authentication mechanism. This service was integrated into Google's Firebase phone number verification service to enable SIM-based authentication via secure tokens. "Security and simplicity are the core of our digital transformation," said Alexandre Harmand, Head of Networks, Telefónica.