Yale's Look doorbell lets you chat up guests from afar, while its Linus and Assure smart locks can unlock the door via Nest and Bluetooth, respectively.
Got a dog that's not particularly vocal about when it needs to go outside? Rig up a cheap DIY doggy doorbell this weekend with these simple instructions
The Smartbell is an advanced doorbell solution that notifies you of visitors on your smartphone. It uses Wi-Fi to establish a video chat while you're out.
Those who pledged for the DoorBot will receive the product this September, and it'll come with more features and smaller hardware than originally teased.