The Credential Manager API has seen significant adoption since passkeys arrived on the scene. Now, Android is taking user authentication to the next level by expanding support across the entire ecosystem, from phones and watches to cars and TVs. In this talk, we'll explore how the Credential Manager API is evolving to enable seamless and secure sign-in experiences on Android Auto, Wear OS, Google TV, and beyond. We'll dive into the latest API capabilities, showcase real-world examples of successful implementations, and demonstrate how you can leverage these advancements to simplify user journeys and enhance security in your own Android apps.