Keycloak for Smart Devices: A Practical Guide to Device Code Flow 1/2

In this story, we’ll implement Device Code Flow with Keycloak using Spring Boot and Flutter.

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· Prerequisites
· Overview
∘ What is device code flow?
∘ Device Authorization Flow
∘ Why Use Keycloak for Device Code Flow?
· Architecture Overview
∘ The Components
∘ The Data Flow Explained
· Implementing Device Code Flow: Step-by-Step
∘ Step 1: Setting Up Keycloak
· Conclusion
· References

Prerequisites

This is the list of all the prerequisites:

• Spring Boot 3 (for Gateway).
• Java 21+ and Maven 3.6.3 or later
• Flutter 3+ installed (for the Android app)
• An installed Keycloak (v26+) server
• Android Studio, Visual Studio Code, or another IDE

⚠️ Note: This story is based on Quarkus-based Keycloak distribution (Keycloak 26+).