What "goalposts" are you talking about? The language you quoted is from an obviously INFORMAL discussion of a NONEXISTENT system. There are no goalposts to move. Nor am I interested in a debate about the deep technical details of a fictional system postulated for an RPG. The FT seems to me to be a reasonable extrapolation from the technology that enables the standard starship transponder. YMMV.
So...if you find the FT idea implausible, THEN DON'T USE IT.
Uh huh.
Since these purported "holes" are based on assumed facts that are not in evidence, you might consider being being a little less strident... Just a thought. ...
The facts were in evidence; I already established that.
You're sounding irritated. It isn't my intention to irritate you, and I don't think HG's sitting there planning how best to get under your skin. If you're feeling offended by anything I say, you have my apologies, but I gotta call 'em as I see 'em. The point here is not to attack you nor to make hash of your idea. We put ideas out there to get feedback from others, and we give feedback in order to help refine those ideas. The end product is usually better for it.
HG's not saying anything a player in your gaming group wouldn't say. If you as gamemaster present your "nonexistent" system as part of their game universe, and they - as gamers are likely to do - start looking for holes to exploit for their own advantage, they are likely to be less than thrilled to have you respond to them as you have to us. If we as gamemasters adopt your system without looking for possible holes that our players can exploit, then it ends up being us sitting there trying to figure out how to deal with it. We all benefit from a "debate" because such a discussion will help reveal and resolve those issues that are likely to crop up in the gaming session itself.
However, if you seriously do not want feedback, then may I respectfully suggest that you indicate that when you post an idea, 'cause most of us take a post as an invitation to provide feedback.
I agree with Aramis that I would like to see the idea incorporated in the existing ship's transponder, and I agree with Spacebadger that a completely foolproof system comes off as gamemaster fiat. It needs to be strong enough to be really challenging, or the criminal syndicates will have a field day and the banks will stop giving loans. However, to make it impossible denies the players an opportunity for an interesting and risky little adventure. I'm also wondering how we'd prevent someone from flying a ship into the Vargr extents and selling it there. The Vargr aren't exactly renowned for honoring Imperial law, and I can't see much that would stop them from pulling out the Imperial transponder and putting one in that identifies the ship as Vargr-owned.