n software 3-D Secure Integrator v6.0 Build 6240 .Net/ActiceX/COM | 3 Mb The /n software 3-D Secure Merchant Plug-in Interface (MPI) is a Visa Certified 3-D Secure, MasterCard SecureCode, American Express SafeKey, Diners Club International ProtectBuy, and JCB J/Secure authorization component (MPI 1.0.2 compliant). The 3-D Secure component allows easy integration of Verified By Visa, SecureCode, American Express SafeKey, Diners Club International ProtectBuy, & J/Secure capabilities into online shopping carts, websites, and merchant systems, while providing extraordinary flexibility to software developers through easy to use component interfaces.