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RFID / NFC Smart Ring - Size 7 - NTAG213 : ID 2801 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Ceramic Horizon NFC Ring is the One Ring to Rule Them All - GetdatGadget | Kids cell phone, Unlocked cell phones, Used cell phones
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Ceramic Horizon The Original Smart Ring - Programmable for NFC Enabled Devices: Jewelry - Amazon.com
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