A shopping receptacle for receiving a product item. The product item comprises an interface surface a position-coding pattern containing coded data is printed on the interface surface. The coded data identifies a plurality of position coordinates on the interface surface and an identity of the product item. The receptacle comprises: a receptacle body and an opening through which the product item is placed within the receptacle body. A sensing device is positioned for scanning product items as they are placed through the opening. The sensing device emits a scanning beam across the opening of the receptacle body and generates, using sensed coded data, indicating data indicative of a position coordinate on the interface surface and the identity of the product item.