Eyes-free exploration of shapes with invisible puzzle

Recent contributions proposed sonification techniques to allow people with visual impairment or blindness to extract information from images on touchscreen devices. In this contribution we introduce Invisible Puzzle Game, an application that is aimed at performing an instrumented remote evaluation of these sonification techniques. The aim is to reach a wide audience of both sighted and visually impaired users and to engage them, thanks to game elements, in playing over time, so that it is possible to evaluate how the performance of each sonification technique is affected by practice.