So I'm also guessing that this makes it illegal to carry one in your car also? The law doesn't apply to only on your person?
It depends on where you are. Technically, I believe it is legal to place an unloaded handgun in your center console and a loaded mag along side it. But, if you are in Chicago, forget it. Home rule laws preempt State Laws. I ain't a lawyer nor do I want to be one.