4. However, Ring and SkyBell don't make smart locks, but give you a shortcut to partner apps instead. Other Smart Home DevicesAside from smart locks, you can connect the video doorbell to voice assistants and smart speakers, such as Amazon Alexa and Google Assistant, to get notifications and sometimes speak with people at the door. As part of a security system, the unit can help protect your home by detecting motion outside. The Nest Hello has plenty of fun and functional features, like “Quiet Time” that disables the doorbell function and only send a message through the app that someone is at your door. Another cool feature is pre programmed responses you can use called “Quick Response. ” Quick Response allows you to choose from built in responses to address people you know, or people you don’t know if you aren’t home or don’t want to be disturbed. Another reason Nest is the best doorbell camera is because of “Familiar Faces,” which recognized people who the camera has seen before. Once you mark them as known, the Nest Hello will let you know via text the name of the person when they arrive. You can also set an automatic notification when that person arrives. The Nest Hello’s simple design utilizes your existing doorbell wiring, so you won’t have to worry about replacing batteries.