High-Tech Hearing Bypasses Ears

A wristwatch phone that lets you listen by sticking a finger in your ear, an MP3 player that vibrates the bones in your skull to play music that only you can hear -- these are some of the products being developed using a technology called bone conduction that sends sound waves through the bones around the ear.

Further information is available at https://www.wired.com/science/discoveries/news/2004/09/64963