An apparatus and method for the detection of errors in compressed digital image is disclosed. The game control means 100 are arranged to play a game wherein a plurality of symbols 43 are randomly selected and displayed on the display means 41 and, if a winning combination results, the console 40 pays a prize. The invention includes a presentation style transformer and a card-based presentation generator. The request is granted if the determined cost is less than or equal to a threshold that is responsive to a load on the network. Other embodiments relate to a device for image-based retrieval and rendering, comprising an image capturing device for capturing digital image; a device for processing the digital image to match it against digitally-stored documents; a device for retrieving a digitally-stored document that matches the digital image; and a device for rendering the selected retrieved image. The print substantially corresponds to the colorimetric attributes of the corresponding proof for the electronic source file.