Samsung Accessory SDK for .Net projects like Xamarin.Android this project is xamarin.android binding version of Samsung Accessory SDK https://developer.samsung.com/galaxy-accessory/overview.html
Samsung currently doesn't have any package or dll for xamarin.android but only for java and native. Installing nuget https://www.nuget.org/packages/SamsungAccessorySDK.Net/ you can access all samsung consumer and provider api functionality in your xamarin.android app.