Factory Theft detterent system, how effective is it?

[Hummertech]

The remote system on that car has "rolling code technology". Which basically means that it changes the frequency each time so someone cannot record your signal, and then play it back later to unlock your car. I have never heard of this system being compromised. However, maybe it is possible someone has found a way to beat it. I haven't heard of it though. But it isn't the hardest to break in by manipulating lock rods.