Flutter Social Authentication Guide

Goal

Implement secure, high-quality social authentication in Flutter applications across iOS, Android, and Web. This skill focuses on the most common identity providers (Google, Facebook, Apple) using best-practice plugins and native configuration strategies to ensure a seamless "Privacy-First" user experience.

Process

Phase 1: Provider Selection & Requirements

Identify the required social providers and gather necessary developer portal credentials.

• Google: Google Cloud Console / Firebase Console (SHA-1 fingerprint required for Android).
• Facebook: Meta for Developers (App ID, Client Token).
• Apple: Apple Developer Program (Service ID, Team ID, Key ID).
• LINE: LINE Developers Console (Channel ID).