HLR Lookup vs. SMS OTP: Choosing the Right Phone Verification

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In the digital landscape, phone number verification is essential for businesses to ensure user identity authenticity, with methods like Home Location Register (HLR) Lookups and SMS One-Time Passcode (OTP) verification being prevalent. HLR Lookup provides a passive, real-time check of a phone number's status within a mobile network operator's database, offering benefits like real-time validation, carrier information, fraud detection, and cost efficiency, although it doesn't confirm user possession. Conversely, SMS OTP actively verifies user possession by sending a unique code to the user's phone, proving control of the number, and is widely used for account creation and securing transactions. Didit combines these methods in its AI-native Phone Verification solution, offering a modular approach that integrates OTP verification with risk assessments, including carrier detection and fraud scoring, to enhance security and user experience. By strategically combining HLR and SMS OTP, businesses can optimize identity verification workflows, reduce fraud risks, and maintain a seamless user experience.

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