Not specifically a smart lock but electronic locks do not always react well to the cold. This happened to us in our condo when it became extremely cold a couple of winters ago. The contraction of the door caused the bolt to catch a little and it wouldn't open. We replaced it with an electronic lock with a key back up.
A fellow near us who works shifts in Fort McMurray has a smart set up where he can give service people access while he is away and monitor the activity on camera while he is away.
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