Recommendation on a 13+ inputs digital multiplexer.

Thanks again for the replies.

Crossroads: The "Wireless route " was going to be my next step (if I can make the whole thing work with wires, that is). I was thinking bluetooth but I don't know if there is a module for this and even if there is, what would be the simplest solution, Bluetooth or RF?

fungus: I was not aware of that, thanks for pointing it out.