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Summaryhttps://www.youtube.com/watch?v=_Sj17Lb38e0 Read the full guide on: https://learn.adafruit.com/3d-printed-rfid-nfc-rings In this project we’re embedding an RFID tag into a 3D printed ring. The micro RFID NFC tag is incredibly small and yet flexible enough to be embed into all sorts of objects. It features a NTAG203 chip plus antenna and contains 144 bytes of read-write memory. It works with almost any NFC capable tablet and has secure 8-byte user ID. Although we carry NFC/RFID rings in the shop, it’s much more cost effective to 3D print one and you can also customize it to any size or shape!