In my experience it's mostly a matter of not having the most desirable bike or the shittiest lock. Put a $100 u-lock on a $300 bike, and you can almost be assured that you'll have neither. Put a nice enough lock on yours, and you can be pretty sure you won't have the most easily stolen bike either.
At least in the US, road bikes are pretty much immune to being stolen because they're seen as terminally uncool by the lay population. Would I leave a $5000 road bike locked up at a subway station? Not likely, but I'm not fast enough to justify owning one anyways. $2000, yeah probably, as long as I'm not leaving it there daily.
Anecdotally, police won't do shit to recover a stolen bike in the US. Having some kind of tracker is only going to help you once it's already been stolen. I'd focus my efforts on preventing the theft in the first place.
At least in the US, road bikes are pretty much immune to being stolen because they're seen as terminally uncool by the lay population. Would I leave a $5000 road bike locked up at a subway station? Not likely, but I'm not fast enough to justify owning one anyways. $2000, yeah probably, as long as I'm not leaving it there daily.
Anecdotally, police won't do shit to recover a stolen bike in the US. Having some kind of tracker is only going to help you once it's already been stolen. I'd focus my efforts on preventing the theft in the first place.