A step-by-step guide to integrating passkey-based biometric authentication into an Angular single-page application using the Auth0 SDK. Covers creating an Auth0 account and SPA application, installing the Auth0 Angular SDK, configuring callback URLs, enabling passkeys via the Auth0 dashboard, and setting up identifier-first login flow. Also explains the underlying WebAuthn registration and authentication ceremonies, the roles of relying party, client, and authenticator, and how resident (client-side discoverable) keys enable seamless login UX with autocomplete.
Table of contents
PrerequisitesProject SetupSetting Up Auth0Adding Support for PasskeysUsing Passkeys in Our AppThe Signup FlowThe Login FlowResident KeysBest Practices When Using PasskeysConclusion42 Impressions