Attached SDK is written for the fingerprint terminal. Inside there is "[url removed, login to view] " which is used for downloading data from one fingerprint device to Udisk and than using this udisk you can upload data to another device. But we want to the transmission from our software. We do not want to use Udisk for transmitting data from one device to another. We are developing a time attendance software in C# , and using the dll s at the attached SDK. Now we need this dll in order to use at our software.