Bone conduction & Ibuki

Ok, I looked it up, and the technology used in the "handphones" installation is called Bone Conduction Technology. So I have started looking up information about this online, mainly how other people have used it in installations. I want to look up how it actually works, but for now I just want to see how other people have used it. Here is one example, a sound installation called "Ibuki" which allows visitors to listen to inanimate objects by placing their chins on them.
Ibuki means "sign of presence," and this installation is about how everything is in a constant state of change, and you should be able to hear the sound of this change, which is caused by actual physical activity.