Lost keys are likely to be found in places you frequent. Sometimes this won’t provide much information about where the matching lock is; sometimes it’ll provide a great deal. There’s a big difference between losing your house keys in a coffee shop twenty miles away and losing them in your driveway.
Generally I think I’d be more concerned about car keys than house keys; not only will you typically not stray far from your vehicle when using it, but testing for a match looks a lot less suspicious and many keys come with features intended to make it easier to find the matching lock.
Lost keys are likely to be found in places you frequent. Sometimes this won’t provide much information about where the matching lock is; sometimes it’ll provide a great deal. There’s a big difference between losing your house keys in a coffee shop twenty miles away and losing them in your driveway.
Generally I think I’d be more concerned about car keys than house keys; not only will you typically not stray far from your vehicle when using it, but testing for a match looks a lot less suspicious and many keys come with features intended to make it easier to find the matching lock.