RFID / NFC Smart Ring - Size 8 - NTAG213 : ID 2802 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Adafruit Industries, Unique & fun DIY electronics and kits RFID / NFC Smart Ring - Size 8 - NTAG213 : ID 2802 - What did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined
What did Lord Sauron, when forging the One Ring in the fires of Mount Doom forget to include in his all powerful ring? What did he forget to leave out of the ring impervious even to dragon fire, designed to rule over all free peoples of Middle Earth in perpetuity - a ring destined to be the One Ring to Rule Them All, to tempt its wearer with the promise of infinite power? Thats easy - it could have used an embedded RFID/NFC transponder!

Full Ceramic Waterproof 213 NFC Smart Ring for IOS Android With Functional Couple Jewelry NFC Ring Touch Sharing Smart NFC Ring - AliExpress

adafruit-13.56MHz RFID/NFC Card - NTAG213 Chip ADA4034

RFID / NFC Smart Ring - Size 10 - NTAG213 : ID 2804 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits

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Full Ceramic Waterproof 213 NFC Smart Ring for IOS Android With Functional Couple Jewelry NFC Ring Touch Sharing Smart NFC Ring - AliExpress

8mm NFC Tag Smart Ring Wearable Smart Rings Finger Digital Ring for Phone with Functions - Transparent(#8)

RFID / NFC Smart Ring - Size 12 - NTAG213 : ID 2806 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits

RFID / NFC Smart Ring - Size 8 - NTAG213 : ID 2802 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits

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8mm NFC Tag Smart Ring Wearable Smart Rings Finger Digital Ring for Phone with Functions - Transparent(#8)