Additional file 1: of Effectiveness and cost-effectiveness of a loyalty scheme for physical activity behaviour change maintenance: results from a cluster randomised controlled trial HunterRuth MurrayJennifer GoughAisling TangJianjun PattersonChristopher FrenchDavid McIntoshEmma XinYiqiao KeeFrank 2018 Components of the physical activity monitoring system (wifi beacons, keyfobs and website). (DOCX 1236 kb)