A shopping receptacle for facilitating interaction between a user and a computer system, the receptacle being adapted to receive and retain a product item having an interface surface associated therewith, the interface surface having disposed thereon or therein coded data including a plurality of coded data portions, each coded data portion being indicative of the identity of the product item, wherein the receptacle comprises: (a) a receptacle body adapted to receive and retain the product item; and, (b) a sensing device adapted to: (i) sense at least some of the coded data on the interface surface of the product item as the product item is positioned in a sensing region; , and, (ii) generate, using the sensed coded data, indicating data indicative of the identity of the product item; and, (iii) transfer the indicating data to the computer system; and, (c) a user interface for facilitating the interaction with the computer system, the interaction being performed using the indicating data.