Adafruit RFID / NFC Smart Ring - Size 8 - NTAG213

The One Ring to Rule Them All might have benefited from an embedded RFID/NFC transponder, adding modern connectivity to its ancient power. NFC technology allows seamless wireless interaction across a variety of projects.

The RFID/NFC Smart Ring is equipped with two MiFare Ultralight C - NTAG 213 chips, each offering 144 bytes of read/write memory. One chip is discreetly placed on the inside, close to the palm, while the other resides beneath the jewel.

This versatile ring can communicate with smartphones, tablets, and computers. Use it to launch apps, unlock devices, transmit URLs, or even control microcontrollers like Arduino.

Designed with an 18mm inner diameter, this smart ring is compatible with any NFC/RFID reader supporting ISO 14443-3A MiFare Ultralight/NTAG, making it compatible with most readers, including PN532 readers and various smartphones and tablets.

Explore the possibilities with our range of sizes, and unlock a new realm of NFC and RFID projects. The Adafruit Learning System offers extensive resources for those looking to delve deeper into RFID/NFC technology.