This article deals with the development of Assistive Technologies in order to provide or expand functional abilities of people with visual impairments, analyzing in general is perceived that the technological evolution goes toward making life easier, this project is exactly the creation an indicator of direction and warning against collisions based on a data processing unit, approximate location system received signal strength indicator (RSSI) or indicator intensity of the residual signal in Portuguese, in structured environments coupled with a recognition unit obstacles that allows guide people with impaired vision by sending beeps.