Abstract: A book spread identification arrangement for a board book is provided, the arrangement comprising a plurality of conductive paths, contact means disposed adjacent at least part of at least one of the conductive paths and processing means connected to the conductive paths and configured for processing signals associated with the conductive paths. One selection end of each path is disposed adjacent the spine surface of the book. The contact means comprise one or more conductive surfaces and are arranged, upon opening of the book to a spread, to contact one of a plurality of combinations of one or more of the conductive paths. Each of the plurality of combinations is in a predetermined unique association with a respective single spread of the book. From the processed signals, the processing means are able to determine the particular combination of conductive paths contacted by the contact means and identify to which spread the book is open.

Abstract: The invention provides an electrical device activated by conductive ink patterns applied to an activation strip which includes a plurality of electrical contacts disposed in an array adjacent to each other. Also included is reader circuitry connected to said plurality of electrical contacts and a housing arranged to contain said reader circuitry and to locate the plurality of electrical contacts. The invention is arranged so that the housing locates the plurality of contacts to facilitate movement of an activation strip relative to the contacts with the contacts touching the activation strip and the contacts arrayed across the width of the activation strip. The provision of an activation strip is also within the scope of the invention.