Smartcard Emulator Software(Virtual smartcard). It is possible to use usb flash drive as Smartcard. Smartcard API is MS-CAPI(BaseCSP) and CNG(KSP) and PKCS#11. Normaly import PKCS#12 Certificate. You can use S/MIME and VPN and MS-Office digital signature. You may use SiMyuCard instead of usb flash drive. SiMyuCard is Freeware and Smartcard Software Simulator.