Nest says the camera has HDR imaging for a clear picture, and there's a night vision feature, too. The camera doesn't just kick on when someone rings a doorbell. Motion sensors capture the image of anyone who approaches your door, and you're sent an alert on your phone. As with Nest Cam IQ, you can subscribe to Nest Aware to use the Familiar Faces feature and get continuous video storage. Out of the box, Nest Hello will capture three hours of snapshots from your front door and provide free person alerts. Nest Hello's app offers a head to toe view. Nest Hello features HD Talk and Listen so you can speak to whoever's outside. For those times when you're otherwise engaged, the Nest Hello app has a quick response feature, which plays a voice message. Nest touts that capability as a quick way to handle package deliveries without having to come to the door. A more clever addition to the app is a nap time feature that silences the door chime while still sending notifications to the phone. It sounds like a handy way not to be interrupted by a doorbell.