Adafruit RFID / NFC Smart Ring - Size 12 - NTAG213

Embrace technological enchantment with the RFID/NFC Smart Ring, a modern marvel blending connectivity and convenience. Equipped with dual MiFare Ultralight C - NTAG 213 transponders offering 144 bytes of read/write memory, it effortlessly integrates with your smartphone, tablet, or computer to perform an array of wireless interactions.The ring has thoughtfully positioned tags: one discreetly inside near the palm and another subtly beneath the jewel. This allows you to launch apps, unlock devices, share URLs, and even command Arduino boards with a simple flick of your finger.Featuring a 22mm inner diameter, this RFID/NFC Smart Ring ensures seamless communication over short distances using NFC technology—like a portable Bluetooth® without the need for authentication. It’s an extension of RFID, opening up a world of possibilities from personal security to creative projects.The ring is compatible with any NFC/RFID reader supporting ISO 14443-3A MiFare Ultralight/NTAG protocols, working flawlessly with devices like our PN532 readers and numerous smartphones and tablets. Explore more about RFID/NFC capabilities through the Adafruit Learning System and elevate your interaction with technology.