Ok I just read the key fob trick and I'm literally LOL!
I have used this trick in large parking lots since the old Clifford alarms back in the 80's. If you put the fob under your chin and use your other hand as a pointer you can set your alarm from much farther away then just pointing the fob.
I have convinced friends who thought I was crazy by having them back away from the car until the fob won't set the alarm then I have them take 10 extra steps back try the fob and when it doesn't work try my trick. It always works and I have a new convert.
It saved a lot of walking around looking for the right rental car at Disneyworld. Stand on a lightpost and point away.

I can tell it's a girl 'cause she tells me where to turn.