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Ceatec shows off future gadgets (07 Oct 2005)
Ubi-Wa has two meanings in Japanese - "Finger ring" and "Speak by finger" - which is exactly what it lets you do.

In noisy places where you cannot hear who you are calling, you simply place the Ubi-Wa bearing finger in the ear.

The ring converts speech sounds to vibrations. These travel down the bone and into the ear canal, which obligingly turns them back into intelligible speech.

DoCoMo is continuing the development of the ring. As it shrinks, it will be too small to sport functioning buttons.

The solution is to tap out predefined rhythms with your thumb and the finger that is wearing the ring. Each unique rhythm carries out a different function. They call this UbiButton.
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