1
David Chaum: Card-computer moderated systems. Nixon & Vanderhye, May 15, 1990: US04926480 (320 worldwide citation)

A user controlled card computer C and communicating tamper-resistant part T are disclosed that conduct secure transactions with an external system S. All communication between T and S is moderated by C, who is able to prevent T and S from leaking any message or pre-arranged signals to each other. Ad ...


2
Steven M Hoffberg: System and method for determining contingent relevance. Steven M Hoffberg Esq, Ostrolenk Faber, November 14, 2017: US09818136 (5 worldwide citation)

A system and method providing for communication and resolution of utility functions between participants, wherein the utility function is evaluated based on local information at the recipient to determine a cost value thereof. A user interface having express representation of both information elemen ...


3
Chaum David: Card-computer moderated systems. Chaum David, NIXON Larry S, November 30, 1989: WO/1989/011762

A user controlled card computer C (110) and communicating tamper-resistant part T (120) are disclosed that conduct secure transactions with an external system S (130). All communication between T (120) and S (130) is moderated by C (110), who is able to prevent T (120) and S (130) from leaking any m ...


4
Chaum David: Card-computer moderated systems.. Chaum David, March 27, 1991: EP0418328-A1

A user controlled card computer C (110) and communicating tamper-resistant part T (120) are disclosed that conduct secure transactions with an external system S (130). All communication between T (120) and S (130) is moderated by C (110), who is able to prevent T (120) and S (130) from leaking any m ...