This scary setup is a quite working test for detecting a connecting tile through plastic case. Reed switches connect when magnet in the other tile is aligned next to it and both tiles sends this connection information which tile / which side via rf. Next thing is to keep up with this changing connection data in the program side and use it for game play. How, remains top secret until we figure out remotely plausible explanation to entertain our investors.
Taking this to hand luggage might win us a complimentary strip search.