Its an old trick. you go out to dinner with friends and have leftovers. You go to their house for dessert and so need to refrigerate the stuff so you leave your keys on top of your food in their fridge. No way to forget the stuff as you can't unlock the car and you need your keys.
Now along comes the fob. You do the same thing only she has a key fob in her purse. She gets to the car, opens her door which unlocks yours and sits down. She sits down in passenger seat and you get in to drive. You start car and drive home. Only your keys are still sitting on top of your food in friend's fridge.
