Smart Bell, designed by 13-year-old Laurence Rook, dials the homeowner’s mobile phone when pressed, allowing them to talk to whoever is outside their front door.
The device even produces a small amount of white noise to give any unexpected guest the impression they are speaking to someone inside the house on an intercom system.
Now, if only apartment buildings could have Smart Bells too!
Imagine that. “Bell Forwarding”!