Patent ID: 6049788
Filing Date: 2000-04-11
Classification: G06K,G06Q,G07F

Abstract:
A system comprising:a portable terminal having first and second receiving means for establishing an operative connection with portable first and second data media which are inserted into the respective first and second receiving means, control elements, display elements and a control circuit adapted to perform predetermined operations following an actuation of the control elements to transfer commands and/or data via the operative connection to the first data medium inserted in the receiving means and to receive data from the first data medium and to move selected data to the display elements,a portable first data medium for insertion into the first receiving means and comprising an electronic control circuit and storage means,a portable second data medium for insertion into the second receiving means and comprising an electronic control circuit and storage means, the second data medium being uniquely assigned to at least one specific first data medium of several data media via check data contained in the storage means of the first data medium and of the second data medium, the control circuit of the second data medium being adapted to cooperate with the control circuit of the terminal in order to transfer data and/or commands to the first data medium and to execute specific operations on data in the storage means of the first data medium only when said operative cooperation is established, with at least some of the operations being executable only if previously the assignment is checked via the check data and is found to be correct.