Abstract: A computer network system and method for printing purchase transaction receipts includes a novel printer physical structure, data structure, and control logic for printing on both sides of a register receipt, business rules designed to facilitate the two sided printing, and print paper designed to facilitate two sided printing.

Abstract: A reduced PID tag set specification represents POS transaction data in a manner that is largely retail store product specification independent. A reduced PID tag set specification is a tagged format specification in which a number of PID tags in the tagged format specification is less than the number of PIDs for products contained in RS POS CSs PID specification. In a preferred embodiment, there is only one tag set defined for identifying product identification datum as such. As a result, the product descriptions of all of the product identifications that exist in a retailer's product identification specification are lost when saving the same data in the preferred reduced PID tag set specification. However, saving the retailer's transaction data in a reduced PID tag set specification moots the need to know the retailer's product identification specification in order to receive, store, organize, and, to a certain extent, process the retailer's transaction data.

Abstract: A reduced PID tag set specification represents POS transaction data in a manner that is largely retail store product specification independent. A reduced PID tag set specification is a tagged format specification in which a number of PID tags in the tagged format specification is less than the number of PIDs for products contained in RS POS CSs PID specification. In a preferred embodiment, there is only one tag set defined for identifying product identification datum as such. As a result, the product descriptions of all of the product identifications that exist in a retailer's product identification specification are lost when saving the same data in the preferred reduced PID tag set specification. However, saving the retailer's transaction data in a reduced PID tag set specification moots the need to know the retailer's product identification specification in order to receive, store, organize, and, to a certain extent, process the retailer's transaction data.

Abstract: A method and system for issuing incentives based on pressing certain mechanical or virtual keys on a POS system where such keys correspond to products, totals, sub-totals and other functions normally associated with a POS keyboard and the location of such keys are in a constant state of flux. A system and method for harvesting the information that describes the name and location of keys and using this information to issue incentives to a consumer at the POS terminal.