Patent ID: 7290139
Filing Date: 2007-10-30
Classification: G06F,G06Q

Abstract:
1. A computer system comprising: a first computer entity and a second computer entity each having program-accessible information and each having access to a set of rules for modifying the program-accessible information; wherein the second computer entity is arranged to modify the second computer entity's program-accessible information in accordance with a received change to the first computer entity's program-accessible information if the second computer entity determines that the received change to the first computer entity's program-accessible information complies with said set of rules and irrefutably establishes that the received change is associated with the first computer entity; and wherein the first computer entity is arranged to modify the first computer entity's program-accessible information in accordance with a received chance to the second computer entity's program-accessible information if the first computer entity determines that the received change to the second computer entity's program-accessible information complies with said set of rules and irrefutably establishes that the received change is associated with the second computer entity.