Intelligent key port aka fobgina question

steveg78

I've done a search of the forums and looked in the manual and haven't found my answer; here's my question:

What's preventing someone from stealing an unlocked 370Z by sticking something in the key port and starting the engine?

I mean if the key port is for use when your intelligent key battery is dead then this leads me to believe there is no sensor system active in the intelligent key and car. So the key port just seems to be a mechanical switch that allows the car to be started once something is in the key port???? I know it can't be that simple but I don't want to jam anything into my key port to find out the answer!!!