The RFID/NFC Smart Ring embeds two NTAG213 transponders into a wearable ring — one on the inner band (palm side) and one beneath the jewel. Each tag provides 144 bytes of read/write memory over the ISO 14443-3A standard, making the ring compatible with virtually any NFC/RFID reader including smartphones, tablets, and PN532-based modules.

Use it to unlock your phone, launch apps, open URLs, trigger Arduino actions, or replace RFID access cards — all with a tap of your hand.

Key Features

• Dual NTAG213 Tags – Two independent NFC transponders (palm side and jewel side)
• 144 Bytes Read/Write Memory – Per tag, for URLs, app launchers, vCards, or custom data
• ISO 14443-3A Compatible – Works with all standard NFC/RFID readers (MiFare Ultralight/NTAG)
• Size 11 – 21 mm inner diameter
• Passive / No Battery – Powered by the reader's RF field

Ideal For

• Unlocking NFC-enabled smartphones and tablets
• Launching apps, URLs, or Wi-Fi credentials with a tap
• Arduino and Raspberry Pi NFC/RFID projects
• Access control and authentication