"content": "# Introduction\n\nIn the ever-evolving landscape of mobile app development, **authentication** is a **critical aspect** that directly influences user experience and security. This article will guide you through the process of integrating **Google Sign-In authentication** into a **Flutter** app, leveraging the power of **Supabase** as a backend service.\n\n# Background\n\nBefore we dive into the implementation, let’s briefly discuss the technologies involved:\n\n1. **Flutter** ([https://flutter.dev/](http://flutter.dev/)): A popular open-source UI software development toolkit by Google for building natively compiled applications for mobile, web, and desktop from a single codebase.\n2. **Supabase** ([https://supabase.com/](http://supabase.com/)): An open-source Firebase alternative, Supabase provides a scalable and secure backend-as-a-service (BaaS) infrastructure for applications.\n\n## Prerequisites\n\nBefore getting started, make sure you have the following prerequisites:\n\n1. Flutter SDK installed, we used v3.16.0\n2. Supabase account and project set up\n3. Basic understanding of Flutter and Dart programming language\n\n## What we're building\n\nOur minimalist Flutter app will consist of **two pages**:\n\n1. **Login Page**: The entry point to our application, the login page, will leverage Google Sign-In to provide users with a convenient and secure authentication process. Users will be able to sign in using their Google credentials, ensuring a smooth onboarding experience.\n2. **Profile Page**: Once authenticated, users will land on the profile page. Here, we’ll explore how to store essential user data in Supabase — *a powerful backend service.* The profile page serves not only as a display of user information but also as a testament to the robust integration between our Flutter app and Supabase.\n\nNow, let’s dive into the step-by-step guide and bring these pages to life, combining the efficiency of Flutter’s UI toolkit, the simplicity of Google Sign-In, and the robustness of Supabase.\n\n## Step By Step Guide\n\n1. **Create a flutter app**\n Begin by creating a new Flutter project using the following command:\n\n `flutter create your_project_name`\n\n2. **Add dependency of supabase_flutter and google_sign_in**\n You can do it by using command:\n\n `flutter pub add supabase_flutter google_sign_in`\n\n3. **Setting Supabase**. Sign in or Sign up in [supabase.com](https://supabase.com/), and then create a project.\n\n... (other steps as needed)",
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