A book for use in an augmented reality system comprises a plurality of leaves, each side forming a page of the book, with each page comprising a fiduciary marker. The running tool has a stem, an inner body, and a piston. The distance the optical head must move to reach a target recording area can therefore be calculated easily independently of where on the disc the optical head is located, enabling the optical head to quickly access the target recording area. The groin wrap is moveable from a stowed position adjacent the anterior pelvic region to a deployed position between the wearer’s legs and adjacent a posterior pelvic region. A preferred method for depositing the thermoplast is a printing process, for example intaglio printing, flexoprinting or screen printing.