System for facilitating the handling of goods based on shopping carts equipped with a RFID tag

摘要

The present invention discloses methods, systems and computer programs to make personal shopping baskets or shopping carts compatible with fraud detection systems already in place in RFID cash registers. To prevent that a malevolent customer removes or masks RFID labels, shopping carts are weighed with their content. This operation supposes that all shopping carts of a same store are identical and have the same weight. After subtraction of the weight of the shopping cart from the total weight, the weight of the content is correlated with the list of the articles detected by the RFID reader of the cash register. In the context of the present invention where personal baskets and personal shopping carts are not identical, it is necessary first to identify them in order to compute the exact weight of the content. To recognize a shopping cart among the thousands of shopping carts present in a store, the use of the RFID technology is a very simple and very efficient solution. A RFID tag is integrated in the structure of the basket or the shopping cart in order to improve the fraud detection system. It is also possible to include in the RFID tag, information like the weight, size, color, type, form, ..... of the shopping cart or basket.