CMU, IBM app helps people with visual impairments navigate their surroundings

To help people with visual impairment find their way indoors and out, NavCog uses Bluetooth sensors placed at turns, intersections and important destinations (elevators, entrances or ATMs) to provide one’s position within 3 feet to 5 feet of actual location. Using a map editing tool and localization algorithms, it can identify your location almost in real time, which direction you are facing and additional information about your surroundings.