Indoor routing question + thank you!

i’m working on some tools to find stairs and elevators inside of buildings… i’m using my cell phone’s a-gps tracking and the results are usable… i’m curious if anyone else is working on indoor routing - my interest is to help blind people (who can’t use elevators) vs wheelchaired people (who can’t use stairs) is where i wrote up my latest work… i would appreciate feedback and criticism :slight_smile:

also - i really want to set up a wheelchair routing service for charlottesville virginia usa, and appreciate all your work - thank you!