I replaced my existing smart lock with this one.   My existing lock had a fingerprint reader and it was nice,  but it was bulky and it went through 4 AA batteries really fast.   So I was ready to replace it.  This lock is great.   It's low profile,  and only has one small battery (I forget the model, but it's a small and uncommon size)  setting up can be confusing because part of the battery saving tactic is to have your phone leave the buffer zone to prevent accidental locks or unlocks.  So it's pretty tough to test the lock.  So, I started out being nervous.  But, this lock works great!  And the touch sensitivity is great.