ID.me Authenticator serves as a dedicated two-factor authentication solution specifically designed for users of the ID.me identity verification platform. The application functions within the broader ID.me ecosystem, which provides verified digital identity services for government agencies, healthcare providers, and financial institutions. This specialized focus distinguishes it from general-purpose authenticator apps, positioning it as an essential security tool for users requiring secure access to sensitive services that mandate ID.me verification. The application's core functionality centers on generating Time-Based One-Time Passwords (TOTP) that refresh every 30 seconds, following the industry-standard RFC 6238 protocol. Additionally, the app supports push notification-based authentication, allowing users to approve login attempts with a single tap rather than manually entering codes. The setup process involves scanning QR codes from supported websites, after which the app maintains synchronized time-based codes even without internet connectivity. This offline functionality ensures continuous access to verification codes regardless of network availability. User experience demonstrates a minimalist interface focused purely on authentication functionality. The main screen displays all configured accounts with their current verification codes and countdown timers. Navigation remains straightforward with clear labeling and intuitive organization. Real-world usage patterns show the app primarily serving users who need to access government services like IRS, Social Security, or state unemployment systems that require ID.me verification. The absence of extraneous features keeps the interface clean but may limit appeal for users seeking broader authenticator functionality beyond the ID.me ecosystem. User feedback trends indicate generally positive experiences with specific functionality, though the limited review sample requires cautious interpretation. Multiple reviews from Regina Mills on May 26, 2025, highlight satisfaction with the authentication process and customer support, specifically mentioning the ability to access multiple agencies and appreciation for live technical support. These reviews consistently emphasize the smooth operation and security benefits, though the identical nature of multiple reviews from the same user suggests potential limitations in the feedback dataset available for analysis. The application's primary strength lies in its specialized integration with the ID.me platform, providing seamless authentication for government and financial services. However, limitations include its narrow focus compared to universal authenticator apps, potentially requiring users to maintain multiple authentication applications. The 3.6 rating suggests room for improvement, possibly in areas of broader compatibility or enhanced user experience. Ideal use cases involve individuals regularly accessing ID.me-verified services who prioritize specialized security over generalized authentication capabilities.