I would like to be able to use GPS on my phone, in conjunction with an app, to enable O&M (Orientation and Mobility) support, on my device.
I want the app to tell a blind person walking along a rural carless path by a silent river when they are deciding from the path.
The path is mostly straight, with some bends. I want to know whether, on a clear day, the GPS can detect displacements of two meters. If not, what is the displacement accuracy if GPS.