Portable, electronic mobility aids for positioning, navigation, communication and collision avoidance, namely, electronic navigation instruments; electronic systems for collision detection and collision avoidance comprised of electrical sensors for sensing the presence or absence of individuals or objects by contact or pressure, navigational instruments, motion detectors, computer hardware and software for the transmission of data between two points; electronic communication systems comprised of computer hardware and software for reception and transmittal of navigational information; electronic systems for sensing and storing of topological information comprised of electronic sensors and electronic memory media; electronic sensors, in particular for collision detection and collision avoidance; man-machine-interfaces, namely, interfaces for detectors used for detecting obstacles, haptic, visual and acoustic; all said goods in particular for visually impaired persons

Providing information, in particular navigational information and location related information, from a database, namely, providing electronic transmission of navigation information stored in a database via interactively communicating computer systems in particular for portable, electronic mobility aids, in particular for visually impaired persons

Creating navigational information, namely, topographic maps and street maps; all said services in particular for visually impaired persons