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Light powered keyboard that turns light into information: batteryless, no recharge, wireless, unhackable, no interference with other wireless devices, waterproof, low cost. Couldn’t find an ideal wireless keyboard to go with your tablet or large-screen smartphone? We know. You want it to be truly slim, light weight, and free from recharge. It should come with full size keys and tactile feedback for good typing experience, and be compatible to all operating systems and versions. You may want it to serve as a protective cover while not typewriting. We have the keyboard to meet all of your needs. It is a light powered keyboard built upon our patent pending technology. It has no battery and no electronics. Therefore, it is truly slim, light weight, waterproof. And it doesn't have other problems that bluetooth keyboard is facing, for example, signal hacking by hackers, signal interrupting by wifi or other bluetooth devices.