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

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

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China , Chinese , , Abacus Rings , Biometric Shirts , Abacus Gestures , Large Set , Math Based Usable , Digital Tools , Final Project , Smart Ring , Century Wearable Abacus ,