The system has a postal security device that contains stored postage value, which causes the nonsecure printer to print onto a mail piece. In addition, the postal security device is attached to a secure card interface, which receives a secure card. The postal security device is connected to the TMS host...http://www.google.ca/patents/US6227445?utm_source=gb-gplus-sharePatent US6227445 - Secure smart card access to pre-paid metering funds in meter
