Card reader module with pin decryption

摘要: A card reader module includes capabilities for receiving and decrypting an encrypted user PIN to facilitate off-line transaction authorization. In transaction, a processing system need not communicate with outside authorization network obtain Off-line is particularly relevant when customer uses secure payment device, such as smart card. With card, the system, in cooperation compares user-entered PIN, input through keypad, stored on If matches authorizes customer's transaction. Rather than including receives format directly or indirectly from separate keypad. To minimized fraud, keypad encrypts before it sent module. The decrypts received information comparison card-stored information. Based comparison, provides other elements system. Preferably, used fuel dispensing This allows of fueling transactions, based verifying against PIN. By separating PIN-entry module, may be individually serviced, thereby reducing maintenance expenses, which used.