Robert W. Sisson

Key distribution system

System and method for efficient uncorrectable error detection in flash memory

System and method for mutual authentication and secure communications between a postage security device and a meter server

Auditable security system for the generation of cryptographically protected digital data

Active tamper detection system for electronic modules

Method for removing funds from a postal security device

Method for customer selectable module size for an information based indicia

System and method for providing an additional cryptography layer for postage meter refills

Method and apparatus for securely transmitting keys from a postage metering apparatus to a remote data center

Apparatus and method of determining the authenticity of weight obtained from a vibrating tray scale