Self-Generating, Battery-less Remote Control For TV

NEC Electronics and Onryoku Hatsuden developed a prototype [J] of remote control which is powered by the movement of user’s button-push actions.
nec-electronics-self-generating-remote-control
User actions produce electrical energy, and enable the controller to turn on/off, change volume and switch channels without dry-cell batteries. Both companies are to promote the technology to TV set vendors, to realize it into practical use in 2011.
via Asahi.com [J]

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