I got this for my daughter's house to make it easier for the kids to get in and we don't have to worry about them losing the key. It was easy to install and the program was easy to download on the phone and use. She had no problems assigning codes for the lock. She gets alerts to her phone letting her know when and who has entered her house. It also let's her know when the lock has been manually locked/unlocked. Also, we were able to re-key this lock to work with her front door key since they are kwikset. This lock has other features we haven't tried out yet. She is having windows installed and is able to give a code to the installer so that they can enter and leave without her home. It will let her know when they arrive/leave and she can delete the code to never be used after that day. This Smart Lock is a very nice addition to her new house.