Abstract: The Present Invention comprises the steps of determining a first transaction total price and a second transaction total price, for which the consumer is eligible upon the satisfaction of certain criteria. The first total transaction price is sent from a cashier terminal to a payment interface. Further information, such as an indication of the method of payment presented to the payment interface, is sent from the payment interface to the cashier terminal. The Present Invention then determines whether the consumer is eligible for the second total transaction price by using the further information to determine if the required criteria is satisfied. If the criteria is satisfied, the cashier terminal then sends the second total price to the payment interface.

Abstract: A portable computer system is provided having a base unit and a detachable display unit. The display unit can be oriented in landscape and portrait orientations, or can be replaced by display units having different physical characteristics. A support structure can be deployed to provide increased physical stability when desired.

Abstract: A system and method are provided for reimbursing merchants for coupons used by the customers of those merchants is disclosed. Pursuant to the Present Invention, a Coupon Data File is prepared, identifying the products potentially subject to coupons and/or incentives, and the nature of the associated discount. A Transaction Log Data File is also prepared, describing one or more purchase transactions undertaken by consumers. Finally, a Transaction Log Processor analyzes the transaction log data, compares the information in the Transaction Log Data File with information in the Coupon Data File and tabulates coupons redeemed by consumers during the transactions associated with the information in the Transaction Log Data.