I bought the Kevo dead bolt in March 2014. I loved the lock, at first. Then it stopped working properly. It would take many touches of the lock to operate. Then the lights around the dead bolt went out. I resorted to using my key because the Bluetooth operation sometimes worked and sometimes didn't work. The really annoying part was when I would stick my key in the lock and unlock the door, after trying the Bluetooth unlock function multiple times without success, and then when I step into the house and close the door, the Bluetooth function would then work, locking the deadbolt, and the deadbolt would slam into the frame of my door and bounce back. Talk about frustrating.