NFC Smart Rings: What Are They And Which One Should You Buy? - Tech Advisor

Smart rings are the latest gadgets and these diminutive devices have a lot to offer thanks to their NFC technology. Here's why you'll want one.

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From NFC To Biometrics The Tech Inside Smart Rings - SmartNested

Material: Stainless Steel, Size: 6,7,8,9,10,11,12,13,14, Chip: NFC chip, working frequency band: 13.56 MHZ, Specifications:, Set up smart lock, card

NFC Smart Ring Multifunctional Waterproof Intelligent Ring Smart Wear Finger Digital Ring for Android Phone NFC Devices

What Are Smart Rings? How Do They Work?