The key to me keeping up with a key is to not put any one key any place by itself. That's a perfect recipe for disaster. I keep most all my keys on two key rings, and each one has an Apple Air Tag on it. If they get misplaced or lost my wife can go to within inches of them in a matter of seconds, using her Iphone. The only important key we have apart from the others is an outside hidden key to our house, and we move it from time to time.