If someone can explain tracking in this universe that would also be nice. Not exactly sure what’s going on, since it makes the ever present threat seem weirdly contrived. Also takes away from the actual bounty hunting since it’s more like bounty geocaching?
I got the impression that it has a limited range, so they still need to find out what planet the bounty is on before they can start relying on the fob to track them down.
Overall, though, its really just a plot device that used in several different ways. Plus, I’m personally among those who don’t really give a damn about realism in SW (that always seems to miss the point of space-fantasy to me), so I’m not really bothered by it. The fobs are a bit like the Republic beacon in the prison break episode. It adds tension and suspense to the episode, but gets kinda weird if you actual start to really think about it.