A book product having an outer liner sheet defining spaced-apart opposing front and back covers, and a spine portion having a laydown area therebetween. A plurality of pages attached together on a spine side cooperatively attaches to the spine portion. A security device is disposed between the spine portion and the spine side of the pages in alignment with the laydown area for concealing the security device from casual indication of its presence and held after attachment of the bound pages to the outer liner during normal use thereof for book product purposes.