This thesis aims to improve autistic spectrum disorder therapy for children through the use of augmented reality. Specific points of reference are: signs and symptoms, actual learning processes and technology for their treatment. Interaction between children with autism and their parents or others can be difficult. However autistic children can have a natural talent and enjoyment for interaction with new technological devices. Gaining insight into how autistic children may prefer technology interaction over interaction with people, has led me towards the development of a new interactive AR (augmented reality) based tool for enhancing the relationship between therapists/parents and the child. AR provides the possibility of having 3D modelling, sounds, images and much more at the same time for customised modes of engagement and interest. Undertaken with user testing and evaluation, the research provides insights into how technology opens new doors in improving the quality of life for children with ASD.