Nest has a doorbell--the Nest Hello (
$229)--which pairs with its security system and
smart lock. Like other smart doorbells, it allows you to stream video and audio to your phone when someone rings the doorbell, so you can make sure the delivery man doesn’t leave before you make it to the door, or you’ll be forewarned that there’s an unwanted salesperson ringing. The doorbell has a sleek look that fits well with the rest of the modern Nest product design, and it pairs with Google Home to literally tell you “Someone’s at your door” when it rings. The doorbell can also use Nest Aware, Nest’s continuous video recording subscription (
from $5 a month), previously only available on their smart cameras. Nest Aware can also learn facial recognition for people it sees over and over again, so your Google Home could tell you “Mom’s at the door.”