Bigbruin.com tried the August Smart Keypad
A quote from the article:
In October of 2017 we reviewed the August Smart Lock with HomeKit. Overall I was very happy with the operation of the lock and that it, unlike many other smart locks, kept its presence under wraps to people outside your home since it only replaces the inside portion of the lock. Well recently I came across the August Smart Keypad and thought I would give it a try even though it sells you out to passers-by. So let's see if this device is worthy of your consideration.August Smart Keypad Review @ Bigbruin.com