Gaze-controlled computers had already been utilized successfully for well over two decades before the COGAIN project started. However, those actually benefitting from the technology were comparatively few compared to the numbers who needed it. During the five year course of the project, however, systems, software and strategies were developed that made this technology potentially available, given appropriate support and technology, to groups who might not have even considered eye control a possibility. As a result, gaze control technology was opened up to a much wider group of people. In this final chapter, we sum up research presented in this book and close it by presenting some future trends and areas with high potential for applied use of eye tracking and gaze interaction.