  Assistive devices are a key aspect in wearable systems for biomedical
applications, as they represent potential aids for people with physical and
sensory disabilities that might lead to improvements in the quality of life.
This chapter focuses on wearable assistive devices for the blind. It intends to
review the most significant work done in this area, to present the latest
approaches for assisting this population and to understand universal design
concepts for the development of wearable assistive devices and systems for the
blind.
