If you hope to use the barcode function in ASP server side, SDK/ASP Control is the best choice. With the SDK/ActiveX,you can encode up to 3832 numeric or 3067 alphabetic characters or 1914 bytes of data to image such as BMP,PNG,JPG,GIF image using C/C++/Delphi/VB/C++ Builder with several lines of code. It support 36 error correction levels and several image styles such as background color, bar color, image quality, rotation angle,x-dimension and etc. We support four license modal: Small Company license, 1 Developer License?5 Developer License?Unlimited Developer License. You can develop and distribute your application with one of those license modal depends your needs. COM is a specification and a set of services that allow you to create modular, object-oriented, customizable and upgradeable, distributed applications using a number of programming languages." COM stands for Component Object Model. COM components are an essential part of ASP