This would be useful in an in-park game, requiring people to work together. You would touch a "transmitter" then touch your finger to the ear of your partner. Your partner would hear the message, then reverse and be the conduit for you to hear.
Oh, plus it is very cool!
“That's the way a lot of things happen... You think one person did something
but he was just the one to put the color on it." – Ken Anderson I'm blogging here again!