We made this purchase for both security and easy access to our new condo.
It was very easy to program our user codes, and add some friends in with there own code.
My wife likes the feature of the self locking after she enters our home,
To explain this ... its easy .
When she would come home use her code to unlock the door, it would let her enter and after entrée, a short time later the lock would self lock.
Feeling secure that no one can sneak in with her back turned while putting grocery's or what ever away.
Also using the smart key system we were able to set all of our locks to the same key.
This makes it so much easier not having to carry 3 different keys and fumbling to find which key opens what door.
All and all Its a great system and glad we made this purchase