About a month ago, my son (who had purchased your "Smart Lock") brought your door lock to our attention.We are so glad that he did. It wasn't a week after I installed your "Smart Lock" on our front door that my wife and I, in a rush to get to an appointment, left the door unlocked. Happily, we were able to lock the door from ten miles away! That saved us from a return trip home, and we were able to be on time to the appointment. GREAT!!!