AuthenticID Smart ReAuth is a passwordless authentication solution that uses facial recognition and liveness detection to verify user identity. The system works through an initial enrollment process where users complete a full identity verification transaction, after which an encrypted biometric template is stored with a unique identifier. Subsequent authentications require only a selfie capture, with liveness detection and anti-spoofing checks performed during each authentication attempt. The solution provides authentication in under two seconds with a 99.9% facial recognition match rate and 100% automated verifications. It supports both device-specific and non-device-specific authentication across mobile, desktop, and other platforms. The system can be configured to trigger step-up authentication for high-risk events such as large purchases, account detail changes, or access to sensitive data. Smart ReAuth integrates into web, iOS, and Android workflows and can be customized based on organizational risk tolerance and business requirements. The solution supports zero trust security architectures and can be used as an alternative to traditional multi-factor authentication methods. Liveness detection has passed iBeta Level 2 Presentation Attack Detection testing. Use cases include passwordless logins, password resets, authorizing transactions, profile changes, account unlocking, and access to sensitive information for both consumer and workforce applications.