We have a detached garage and put this lock on our garage entrance so we don't have to worry about having a key with us all the time to get into garage. We also put one on our entrance to our home from the deck. Very convenient not needing a key. Also like the fact we could configure the lock to our existing house key. We do need to replace the batteries in the lock on the garage door a few times a year due to a lot of use and the cold weather, but batteries are easy to change.