I drive a Hyundai at home, and as Lesley said, the ones with the push button ignition do not have the issue of being easy to steal. Here in the US, you can take your Hyundai (and I assume Kia) to the dealership, and they will modify the ignition to make it more difficult to steal. I don't know whether owners of cars on island have that option or not. Come to think of it, our last car we rented on island had a push button ignition.
But regardless, that non secured parking situation would make me very nervous.