Method and apparatus for recording usage data of card...

Details Method and apparatus for recording usage data of card... Method and apparatus for recording usage data of card...

G - Physics

07

F

G07F 7/08 (2006.01) G07F 7/10 (2006.01) G07F 9/02 (2006.01) G07F 9/08 (2006.01)

Patent

CA 2128355

ABSTRACT OF THE DISCLOSURE The invention provides a method for recording usage data of a card operated device, such as a public telephone set or a vending machine, said method comprising the storage of said usage data in a storage unit associated with saiddevice. The usage data being stored in said storage unit have first been transferred from said device to said card and subsequently from said card to said device. The security of the data transfers may be enhanced by cryptographic techniques. Preferably, transmission of said usage data from said card to said storage unit takes place during a verification procedure by means of which the authenticity of said card is checked.

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