Expo Go or Development Build? Building Production-Ready Authentication with Clerk - Part 2

Part 2 of the guide on building production-ready authentication in Expo focuses on implementing browser-based OAuth, constructing a custom email OTP flow, and protecting routes with Expo Router. It differentiates between browser-based OAuth, which opens an in-app browser for authentication with various providers like GitHub and Microsoft, and native sign-in, which is limited to Google and Apple but offers a faster, more integrated experience. The guide provides detailed instructions on setting up redirect URIs, using the recommended useSSO() hook, and configuring GitHub as a secondary provider. It also introduces a custom email OTP authentication method utilizing Clerk's SignInFuture API, highlighting its universal applicability and suitability for enterprise users. The document further explains route protection using Expo Router with the useAuth() hook to manage authentication states and discusses building for production with EAS, covering app registration, environment configuration, and distribution through TestFlight and Google Play. Additionally, it compares Clerk's developer experience and features with other authentication providers like Auth0, Firebase, and Supabase, emphasizing Clerk's native UI components and integrated setup.

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