Rolling your eyes to turn up the volume of a portable music player and tapping your fingers to turn on a DVD player are among the technologies a top mobile carrier is testing for “Wearable gadgets”. Docomo is a Japan based company that is working on this project. In one version, sensors and chips inside headphones detect electrical current produced by movements of the wearer’s eyeballs. The company believes that wearable control technology will be adapted for mobile devices that download music, play games and allow users to shop online as well. This new technology may also enable cell phone cameras to read bar codes to get product information , download music and coupons when the user simply looks at the codes. A wearable cell phone shaped like a ring which is about the size of a table tennis ball. When a wearer sticks his fingers in his ears, the sound travels as vibrations through his bones and in to his ears, where it is heard as sound again.