OAuth 2.0 Device Authorization Flow Explained: Secure Login for Smart TVs, CLI Tools & IoT Devices

Tired of typing your email and password on a smart TV with a remote? In this video, you’ll learn how the OAuth 2.0 Device Authorization Flow solves login on input-constrained devices like TVs, CLI tools, printers, and IoT gadgets.

We’ll walk through real-world examples, an easy-to-understand flow diagram, and Python code that shows how device polling works. By the end, you’ll know how to implement secure and user-friendly authentication for devices without keyboards.

This is the same technique used by YouTube, Netflix, and other major apps to let users log in from their phones while the device handles tokens in the background.