Students of Karlsruhe Institute of Technology (KIT) have developed an image recognition algorithm that identifies obstacles and recognizes free pathways. Based on this, the iXpoint software company has now developed the Camassia smartphone app as an assistance system for the visually impaired. It generates acoustic signals that enable users to follow the desired pathway. It is the first interactive assistance system of this type and works independently of satellite navigation, a complex sensor system, or electronic maps.