This datasheet explains how Telesign Verification provides secure, phone-based authentication through one-time passcodes (OTPs) delivered by SMS or voice. It establishes a verified phone number as a trust anchor to prevent fraud, confirm user identity, and protect high-value transactions. Features include smart message splitting, advanced number cleansing, dynamic caller ID, and automated traffic monitoring for fraud prevention. Supporting over 200 countries, it ensures reliable delivery through direct carrier routes. The process enables seamless two-factor authentication, helping businesses verify users, block fake accounts, and maintain account security.

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