Article:

Visually impaired people represent a large amount of the Brazilian population.However, although a wide range of existing legislation ensures accessibility, mostof the Brazilian public spaces are inadequate to accommodate disabled citizens.In this context, this paper presents a digital device, which combines thesmartphone technologies with Arduino microcontrollers, for orientation andobstacle detection. We tested the minimum viable product and the first vestprototype through a user-centered usability test, which combines HCIassessments to other techniques, such as semi-structured interviews. As known,these wearable devices and mobile applications are in the center of the Internet ofThings discussion. This study is expected to be an alternative for the urbanmobility of visually impaired people, allowing them to have a more active andindependent behavior in public spaces.