It could be done either way -- the general explanation is to issue a command through the LCS "infrastructure", and it gets to these devices in some manner. Example might be to issue a sound selection on these devices at point in time, or location based on the engine going over the track sensor. They'd have to add receivers to get commands, and they'd probably need to add to the command set also. ("Boxcar1: sound index 7, play 5 secs")
Make sense now?
Note: currently the LCS interface would be the LCS wifi connection. if they want to provide a bluetooth interface for commanding ... i'm all for that also.
