Had the Kevo for about 1 month now and its been working to perfection, no complaints! In the future I would like to see an advancement in this technology to be able to lock/unlock the bottom knob as well. Im not comfortable only locking the top lock when gone for Long periods but when I need to make a short trip, I will just lock the top since my car is push to start as well...which is convenient for me to touch to get in. Also hopefully advancements will allow it to have a smaller back part so I can eventually add one to my screen door!!!