There’s a company in California that have designed Ring, a doorbell that lets you see and talk to people at your home’s front door, using your mobile phone.
The doorbell has a video camera and a microphone, allowing you to appear like you’re home, even when you aren’t.
It works when someone presses the doorbell, and it automatically calls your phone. You then have the choice to answer it or ignore it.
When you answer the call, you get a live video feed and can talk to the person on the other end. You can see them, but they can’t see you.
So in the case of a burglar checking out your home, and they ring the bell to see if you’re there, by answering, it appears as though you are home, but just not answering the door, which is a major deterrent to someone breaking in.
Check out their YouTube page, here, to see lots of videos of Ring in action in the real world, or watch the video below to see how it works.