I will put August Smart Lock on top of the list for the smart home devices. This is the device you have to buy if you are looking for smart home devices because of the convenience and the features like Geo-fencing and auto lock/unlock which works very precisely and accurately. While I was buying I thought it is expensive but after using it for few months I realized that the value it provided in just few months is beyond the pricing, it's convenience and accuracy you pay for. I will recommend August Smart Lock to everyone who is looking for smart lock.