Yes, I always thought it was a standard feature, that's why I've always been suprised that my 33 GTR doesn't have it while my 33 GTS did. Perhaps the pervious owner had some sensor removed since I got my GTS as soon as it arrived in Oz while my GTR ran around Sydney for about a year before I bought it. I was assuming it was a sensor or something simalar, rather than part of the alarm system I was running.
Not sure what alarm I've got, will have to check when I get home, The previous syste, was Brant but this got replaced after an incompetant electrician blew all my wiring! I know I can press the button on the remote after ignition and it will lock both doors, but once the ignition is killed the doors are still locked and I have to press the button again to get them open.