DoorBot Lets You Answer Your Door With a Smartphone or Tablet

Wouldn't it be great to answer your front door with a smartphone? That's the promise of Doorbot, a Wi-Fi-enabled doorbell that alerts you whenever someone pushes its button, sending audio and video to your smartphone. The battery-operated device installs at your threshold with four screws in a bracket. Once you've downloaded its free app and synced any iOS device or Android smartphone with it, you can see and converse with visitors at your door. The app will alert you whenever the button is push...