A safe, group mobile chat system enabling safe group communication, within controlled communities and during organised events for both adult and young people, coupled with an event management system targeted particularly at outdoor and wide area events. Tangles provides controls over interaction between youth, trusted and older participants as well as parental controls. Tangles also provides the planning tools required for team s of competitors to plot routes and for event facilitators to manage and track participants on hikes, expeditions and orienteering style events, providing the necessary privacy and safety controls that make is suited for adult and youth events.