Find my iPhone has been extended to include a few things, most noticably, Activation Lock.
This requires you to enter the owner's iCloud password when setting up the phone, even after flashed. This is a theft deterant.
It also prevents you from resetting the phone's settings.
I agree, they're quite good.
The only two problems I have with them is that they begin to hurt your ears after about an hour, but I guess that's due to the whole ear-piece begin made of plastic. And then it's also lacking some bass as well, but overall they're quite impressive for earphones of...