My husband and i were very impressed with this lock mechanism. Once installed it’s very easy to use. It took us about 1 hour to install just because we were making sure everything we were doing was correct. Then i downloaded the app Yale Access app and followed the prompts. The lock is a lot smoother than we expected and you can remotely lock it or unlock it or add a passcode. It has a sleek look both inside and out.  They added the long screws for stronger protection on the strike plate. Overall not complicated.