Importance

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Abstract

The invention provides methods and systems that keep check of financial transactions by maintaining a count of the financial transactions using a register portion, in conjunction with performing authentication further to inputting transaction data from a data-bearing record that is stored in a device. The system may comprise (A) a communication portion that inputs transaction data received from the data bearing record disposed in the device, the transaction data including an input transaction counter value, the transaction data associated with a transaction; and (B) a processing portion that processes the transaction data. The processing portion may include (1) a memory portion that stores stored data; (2) a register portion that maintains a count of financial transactions so as to provide a current transaction count value associated with the device; and (3) an authentication portion that performs authentication processing using a comparison process that utilizes a transaction count value window and the input transaction count value, the transaction count value window being based on the current transaction count value. The authentication portion may be provided to generate an authentication result based on the comparison process, with the authentication portion outputting the authentication result.

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First Claim