A method and apparatus for communicating information between a token and a host computer having a host computer operating system (OS) supplied inherent driver for communicating with an OS-supported USB-compliant device. The method comprising the steps of coupling to the host computer, and emulating the...http://www.google.com.hk/patents/US20040098596?utm_source=gb-gplus-share專利 US20040098596 - Driverless USB security token
