# Older SDK Version

- [Sign In with Device](/sdk-reference/android/older-sdk-version/android-sdk.md): Our Android SDK offers the easiest way to integrate "Sign in with device" to your android app. You can simply call a function and it does most of the heavy lifting and authentication for you.
- [Authenticate from a Non-Trusted Device](/sdk-reference/android/older-sdk-version/android-sdk/old-authenticate-from-a-non-trusted-device.md)