Smart, smart, smart. This device has a solution for any of your problems. It locks the door, it unlocks the door, by phone or by hand. It keeps track of whoever enters your home. It works with Alexa and can generate temporary keys for your guests. In a nutshell, it is the thing you want to guard your house. We must admit we were impressed, so you should check it out too. Just read our article and get the information.