Adafruit 13.56MHz RFID/NFC Black Sewable Button - NTAG213

This is a blank 13.56MHz RFID/NFC Laundry Tag Button with an NTAG213 chip, often used for garment identification, contactless payment, and various information-sharing systems. The button contains a small RFID chip and an antenna, passively powered when near a reader/writer.

These buttons can be read by almost any 13.56MHz RFID/NFC reader compatible with ISO/IEC 14443 Type A. The chips offer writable EEPROM, storing up to 144 bytes of data and supporting over 10,000 rewrites. Each NTAG213 chip includes a permanent, unchangeable 7-byte serial ID for unique identification.

Compatible with PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino, these tags offer more security than Classic 1K cards and work seamlessly with smartphones and other devices supporting RFID.