> For the complete documentation index, see [llms.txt](https://docs.vida.id/identity-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vida.id/identity-stack/authentication/custom.md).

# Custom

- [SDK](https://docs.vida.id/identity-stack/authentication/custom/sdk.md)
- [User Journey](https://docs.vida.id/identity-stack/authentication/custom/sdk/user-journey.md)
- [Android SDK](https://docs.vida.id/identity-stack/authentication/custom/sdk/android-sdk.md)
- [Getting Started](https://docs.vida.id/identity-stack/authentication/custom/sdk/android-sdk/getting-started.md)
- [Integration Overview](https://docs.vida.id/identity-stack/authentication/custom/sdk/android-sdk/integration-overview.md)
- [Change Logs](https://docs.vida.id/identity-stack/authentication/custom/sdk/android-sdk/change-logs.md)
- [Error Codes](https://docs.vida.id/identity-stack/authentication/custom/sdk/error-codes.md)