The changes and adjustments made to the second generation Kevo really sets it apart from all other smart locks.  The generation 2 Kevo has a smaller footprint and a sleeker look to the inside module.  Also the second generation Kevo is less sensitive to the touch so no more door locking behind you when you quickly run out the door and graze the lock with your arm.  The locking motor also seems to be more powerful (but thats just an observation).   I couldn't be more happy with this lock.  Keep your phone (and your keys) in your pocket. Just one finger touch to the deadbolt and you are in.  Kevo Generation 2 does not dissapoint.