I was thinking that it would be cool to have some AR thing going (ala Pokemon Go - virtual arrow pointing toward the destination) But of course that fails if t

I was thinking that it would be cool to have some AR thing going (ala Pokemon Go - virtual arrow pointing toward the destination) But of course that fails if there is no direct route from where the traveler is. To get directions working right. I think there needs to be a good open standard for road/pedestrian maps, but that will only be as good/reliable as the data source... Haven't looked into open street maps but I think that would be one to check out.