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Smart ring provides a voice in your ear at the touch of a hand

A 'smart' ring developed in Hong Kong aims to help the visually impaired by allowing them to answer phone calls with a touch of a finger. Amy Pollock has more.

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世界のこぼれ話
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for-phone-onlyfor-tablet-portrait-upfor-tablet-landscape-upfor-desktop-upfor-wide-desktop-up