I got this to add extra security to my home as I had no deadbolt before. I absolutely LOVE how this lock works. It has its own app and directions how to install it and add your codes to it to lock and unlock it but I can also co trol it with my google smart home devices! It works fantastic and have nothing it race reviews for it. If you're looking for a great lock, buy this one. Especially if you want one that will work with your smart home systems!