1
Christopher B Wright, Stephen Bristow: Automated transaction system with modular printhead having print authentication feature. Wright Technologies, Leighton K Chong, September 5, 1989: US04864618 (982 worldwide citation)

An automated transaction system employs a terminal for printing a value indicia, such as a postmark, on an article. The terminal contains a modular printer unit which has a printhead and a dedicated microprocessor physically permanently bonded together such that the printhead microprocessor cannot b ...


2
Christopher B Wright, Stephen Bristow: Automated transaction system. Wright Technologies, Jordan B Bierman, Leighton K Chong, January 31, 1989: US04802218 (271 worldwide citation)

An automated transaction system employs a card maintaining an account balance and a terminal for dispensing an article of value and debiting the card's balance. The card has a secure, resident microprocessor which executes an interactive handshake recognition procedure with a secure, resident microp ...


3
Christopher B Wright, Stephen Bristow: Automated transaction system with insertable cards for transferring account data. Wright Technologies, Leighton K Chong, February 13, 1990: US04900903 (177 worldwide citation)

An automated transaction system employs microprocessor-bearing user cards each issued to a respective user for maintaining a history of user account transactions and a user account balance, microprocessor-bearing master cards issued to vendors for maintaining a history of master account transactions ...


4
Christopher B Wright, Stephen Bristow: Automated transaction system with insertable cards for downloading rate or program data. Wright Technologies, Chong Leighton K, February 13, 1990: US04900904 (148 worldwide citation)

An automated transaction system employs portable rate cards having embedded memories for storing rate information corresponding to different services, and a terminal which receives an inserted rate card and operates to calculate the value of an item requested at the terminal by a user using the info ...