Pedestrian crossing app goes on trial in Edinburgh
10 July 2014 Last updated at 15:10 BST
Crossing the road at a busy junction can be difficult , if not dangerous, especially for those with a disability.
A new system has gone on trial in Edinburgh that could make it less of an ordeal.
The mobile phone app can activate the button on a pedestrian crossing when a visually impaired person or person someone with restricted mobility is waiting to cross.
BBC Scotland's Ian Hamilton reports.