Integrating Descope passkeys into a Supabase application offers a modern, secure, and passwordless authentication experience that leverages device biometrics such as Face ID, fingerprint scanners, or Yubikeys. This guide outlines how to replace Supabase's existing authentication with Descope, detailing the process of installing the Descope Next.js SDK, generating Supabase-compatible JWTs, and maintaining Supabase's Row Level Security (RLS) with minimal adjustments. Descope simplifies the implementation of passkeys through a drag-and-drop authentication flow editor, enhancing the security by eliminating risks associated with traditional passwords and providing a smooth user experience. By using Descope, developers can avoid the complexity of manual setup and benefit from a low-code CIAM solution, ultimately leading to a simpler, secure, and more maintainable application. This integration ensures that authenticated Supabase queries are authorized correctly and supports seamless, biometric-based logins that enrich the user experience.