The key fob to one of our cars somehow came off the lanyard I use. for my keys. Fortunately, it came loose when I was taking my keys out of my pocket. So, the only thing I need is a new key ring rather than a new key and RKE transmitter. And I don’t have to worry about anyone driving off in our car. But, is was disconcerting to notice that I was missing a set of keys that I know I left the house with.