Hi atonse. Believe it or not, this was a use case that I was considering when developing the service. Speaking with folks at various conferences I've been at, there seem to be more than a few industries where it's necessary to quickly identify the physically closest employee that can be dispatched to resolve an issue. If you'd like to chat about it some more, send me an email [arash at zood dot xyz].
I think a private instance of the service might even be the most useful solution for you.