Handy Wristwatch Phone
femto writes "ABC is reporting that Japanese researchers have demonstrated a wristwatch phone that uses the wearer's finger as an ear piece. To make a call, you put your finger in your ear and speak into the watch on your wrist. " Finally a phone that makes side talking look cool.
I can see this system working in Japan where the average citizen is thin and healthy, I cannot see it working in the United States.
While the sounds might travel well through a Japanese person's hand, it is a sad fact that the hand of the average American is obese. By the time the sound would reach their ear, it would be completely distorted by having to travel through so much body fat.