A postage metering system that includes a host PC, an SMD, and a printer. The host PC includes a user interface to receive postage information. The SMD operatively couples to the computer via a communications link and includes a processor and a tamper evident enclosure. The processor is configured to...http://www.google.com/patents/US6424954?utm_source=gb-gplus-sharePatent US6424954 - Postage metering system
