I think most of us all thought similarly when we first got out cars. @lowincash is right though, it only opens if you have your key. If you lock your car from a distance, then set your key down and try to open the hatch, it doesn't open. It has a key sensor, just like the doors.Well, with all doors locked, the hatch will still open if you have the key on you whereas the doors will still be locked. Try opening the hatch without the keys on you and the hatch will not open if all other doors are locked.