like to keep my bedroom door locked when we have a house full of teenagers. I was tired of carrying my key around or hiding it somewhere and pulling it out when I needed it. We bought it after looking at and comparing many brands. The change was very easy, it only took me a few minutes. The instructions were very easy to follow. Programming was easy; Again, the instructions were easy to follow. When programming your thumbprint, make sure that when you tap it three times, you move your thumb a little so that it reads different parts of your thumb. This way, virtually no matter how you put your thumb on it, it will read to unlock it for you. It holds 18 fingerprints, so I actually added mine twice just so I could have more angles at which to hold my thumb to unlock. We really like the user-friendliness. It is very well made. It's a solid feeling. And it's stylish. I was worried it would look bulky and ugly since my previous door handle was very pretty, but it's not bad at all. We've been using it for a few months and the batteries are still going strong. I've been thinking about another solution for our front door, but I'm not entirely convinced about moving away from a key entry for our main entrance. I guess I'm just a little too old-fashioned.