The Smart Ring: From the 17th Century Wearable Abacus to Today - Interesting Engineering

It appears that wearable technology is not as new as we think. Chinese traders were using the smart ring as early as the 17th century in the form of

Is this the first wearable computer? 300-year-old Chinese abacus

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The Smart Ring: From the 17th Century Wearable Abacus to Today

Smart rings will be the wearable of choice in 2019 - Verdict

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The Smart Ring: From the 17th Century Wearable Abacus to Today

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