'Cone of silence' keeps your conversations secret

摘要

In Cet Smart, the 1960s TV spy comedy, secret agents wanting a private conversation would deploy the "cone of silence", a clear plastic contraption lowered over the agents' heads. It never worked - they couldn't hear each other, while eavesdroppers could pick up every word. Now a modern cone of silence that we are assured will work is being patented by engineers Joe Paradiso and Yasuhiro Ono of the Massachusetts Institute of Technology.