The OAuth 2.0 Device Authorization Flow, often called Device Flow, is designed to facilitate secure authentication for devices with limited input capabilities, such as smart TVs, gaming consoles, and IoT devices, which present challenges for entering traditional credentials. This flow separates the authentication process from the device requesting access, allowing users to authenticate on a secondary device, like a smartphone, using a user-friendly interface. The process involves displaying a user code and URL on the device, which users can enter on another device to complete authentication. This method balances convenience with security by eliminating cumbersome password entry on constrained interfaces while maintaining OAuth's token-based security model. Device Flow proves beneficial in various real-world scenarios, including smart home devices, game consoles, and printer setups, by enhancing usability and security. It employs key OAuth components, such as access tokens and scopes, and utilizes endpoints for device authorization and token exchange. Security considerations include using high-entropy device codes and implementing measures against phishing attacks. Solutions like Descope offer APIs and workflows to simplify the deployment of Device Authorization Flows, ensuring a seamless user experience and adherence to OAuth security standards.