Yes....yes! I've read your comments. (about holding it and knocking). I just put this back in to try it again and still the same issue....again! You state that another Mod must be interferring with it. If that is so....any ideas which one it might be? It use to work before (about a year or so). But I got rid of it just because it would not work at the Trainyard (Red Card) Now it is still the same problem. Any ideas how I can fix this????? It seems to work everywhere else so far.
Cards not working at trainyard
Sorry....player was swiping the card instead of knocking. Sorry.