Secugen is the third party control hence this forum is unable to help you on the same. Secugen is the biometric device comes with his own API, I think Secugen device has its own documentation and it does have their own C# and ASP.NET sample code with them. you can refer their own and code it check out below link http://www.secugen.com/products/sdk.htmThanks Koolprasd2003 Editor, DotNetSpider MVM Microsoft MVP 2014 [ASP.NET/IIS]