A portable scanning device for scanning a product item is provided. The product item has visible information relating thereto and a plurality of tags disposed thereon. Each tag encodes data on an identity of the product item and the location of that tag on the product item. The scanning device has a sensor for sensing the data encoded by at least one tag, and a processor for determining, from the sensed data, product identity data indicative of the identity of the product item and location data indicative of a location of said at least one tag on the product item.