Comment by gambiting

>>What happens when they are robbed and now your address and how to make a key for your lock are in the hands of some criminals in your area?

I'd hope that Microsoft's key storage is harder to break into than a random local lock company. And there is no need for theoreticals - all my locks are key coded and the manufacturer can make more keys for them if I ask them. They also have my address since they know where they shipped the locks. And yet, I'm not worried about this - I suspect a wannabe robber will just break my windows with a brick not infiltrate the manufacturer's production facility to make a clone of my key.