That's for a hardware receiver. It does not appear to have mobile app or API doc accompanyment or a doc on what is needed for expansion. I would imagine that there is a minimum critical mass and municipal buy-in for such devices to work. Theoretically, mobile apps would require far less barriers to start being useful.
It sounds like you have an idea/proposal for a separate (complimentary) product. It seems like a good idea - I'd like to see someone build that. But... this is not that.
Someone has some something cool here & people seem to be annoyed that they have not done something entirely different.