Patent ID: 8468071

Claim:
A system that keeps check of financial transactions by maintaining a count of the financial transactions using a register portion, in conjunction with performing authentication for at least one transaction, the system comprising: a payment device including a data-bearing record, the data-bearing record storing a transaction count value and a device differentiator number associated with the payment device, wherein the payment device is a RFID device; a receiver that receives the transaction count value and the device differentiator number; a transaction server comprising: a computer memory that stores stored data; and a computer readable medium including program code effective to perform the following: in a device identification portion, identifying the payment device based on the device differentiator number and an account number associated with the payment device; in a register portion, maintaining a count of financial transactions so as to provide a current transaction count value associated with the device differentiator number for the account number, the register portion maintaining current transaction count values for respective device differentiator numbers, which device differentiator numbers are associated with the account number; and in an authentication portion, performing authentication processing based on a comparison process that utilizes the current transaction count value and the transaction count value, the authentication portion generating an authentication result, the authentication portion outputting the authentication result.