Hello Patrick!
For work with keys in Hyundai\Kia you need know PIN, you can order PIN in any place where you want but if you use Autohex service Vin-To-Pin you have guarantee that PIN code will be correct for each car.
I mean that AutohexPC try to check correct PIN for current car or not correct, if yes - then you lost one token and know working PIN for car, it is very important because could be changed by someone. If not then you just have a little problem 😉.
Feel free any question about Kia\Hyundai - i will try answer to you.
Regards!