A computer network for a retail store. The computer network collects coupon redemption information from a plurality of cash registers and periodically sends the redemption information to a market research center, allowing the correlation of coupon redemptions with customer demographic data. Each cash...http://www.google.fr/patents/US5884278?utm_source=gb-gplus-shareBrevet US5884278 - Retail store and method employing multiple network interfaces at each cash register, and receiving signals from portable cards at each cash register
Retail store and method employing multiple network interfaces at each cash ...
