Ill second the "oh come off it!"
Its just a wind up so dumbasses....like myself stand there pressing a button.
Having not tried it, i believe it..
You know when you put the remote fob next to your head and press the button when standing far away works compared to when pressing the fob aiming at the vehicle.
I thought yeah right when i heard that - i was bored and tried it, low and behold it did work.
end of the day its only radio waves.. the mobile must just be replicating them for the alarm/cl sensor to pick them up.