Adafruit RFID / NFC Smart Ring - Size 9 - NTAG213

In the depths of technological innovation lies the RFID/NFC Smart Ring, a beacon of wireless communication encased in elegance. This ring, unlike the mythical creations of yore, comes with embedded NFC technology, offering seamless interaction between your devices.

Within its compact design are two MiFare Ultralight C - NTAG 213 chips, each boasting 144 bytes of read/write memory. Strategically placed, one chip nestles on the inside of the ring against your palm, while the other sits subtly beneath the jewel.

Performance meets versatility as this ring effortlessly syncs with your smartphone, computer, or any NFC-compatible device. Use it to launch apps, unlock your phone, transmit URLs, or even control Arduino projects. Dive into the convenience of NFC, a short-range communication marvel likened to a simplified, no-authentication Bluetooth.

Precision-crafted with a 19mm inner diameter, it is optimal for various NFC/RFID tag projects. Universally compatible, the ring is readable by NFC/RFID readers supporting ISO 14443-3A MiFare Ultralight/NTAG—covering most market options including PN532 readers, tablets, and phones. Discover endless possibilities and expand your knowledge with the guidance from the Adafruit Learning System.