Gizmo puts cold callers on hold.

[Wiggins]

http://news.bbc.co.uk/1/hi/technology/7682111.stm

The TrueCall device acts as a buffer between the phone and the outside world and learns to distinguish between welcome and unwelcome callers.

ring ring

Phone - "Hello, your through to the ****** household, please say your name after the tone"
Caller - "Its Barry, from Great Deal Home Improvements"
Phone - "You fail at calling, goodbye"

 

[Wiggins]