Lookup Identity Match is a zero-knowledge identity verification solution using phone numbers, allowing real-time confirmation of user identities. It helps prevent fake accounts and improves trust with legitimate users. The API can be used at sign up, login, and account changes to verify unique users. It seamlessly integrates in the background with lower costs and friction compared to alternatives like credit bureau and document verification for Anti-Money Laundering (AML) rules. A Twilio Lookup Identity Match implementation is demonstrated using a form input code exchange project as a starting point. The example uses first and last name parameters to match against authoritative data sources like mobile carrier records. The API response provides a success score, error message, and information about the identity match.