Due to errors in GPS localization of smartphones or digital map, blind people using navigation apps may not be able to find the exact locations of bus stops when taking public transportation. A small gap can cause them miss their buses entirely.
All Aboard app comes to rescue.
Use phone camera to find bus stops in your vicinity. Following intuitive auditory cues to walk to precise locations of bus stops.

All Aboard works for the following bus transits:
Massachusetts MBTA
California AC Transit
Chicago CTA
Los Angeles Metro
New York MTA
Seattle Metro
Washington DC Metrobus
Toronto TTC
London Bus Services
Germany Bus and Tram

Instruction how to use All Aboard: https://www.youtube.com/watch?v=GYQd5DpsHys