(This review was collected as part of a promotion.) Alright my husband actually put it in but I didn’t hear swearing and it was pretty quick so I would say all in all it was good to instal! I tend to loose my keys in my purse so this has been so great for me already, especially when I am running behind, I don’t have to fish around for them! My son loves it to! He is 5 and can lock and unlock it