I've had since right around when it launched. It has worked great and as expected the only issue I find sometimes is if I leave the house like to take the garbage out but leave my phone inside, I may touch the lock and it will actually lock me out, one time my wife went to get the mail and her phone was at least 20 feet behind the door and she was locked out all day until I got home. Unfortantely we didn't have a spare key hidden outside, so just make sure you have access to some key in case you get locked out