
This blank 13.56MHz RFID/NFC silicone bracelet is equipped with a compact RFID chip and antenna, activated by proximity to a reader/writer. Its compatibility with almost any 13.56MHz RFID/NFC reader enables versatile usage; just ensure it supports ISO/IEC 14443 Type A cards.
Tested to seamlessly operate with PN532 NFC/RFID breakout boards and Adafruit NFC/RFID Shields for Arduino, these bracelets offer reliable performance and convenience. Their writable EEPROM stores up to 1 KB of data across multiple banks, sustaining over 100,000 rewrites, making them ideal for various applications including secure access control and smart event management.
A distinct 4-byte ID permanently burns into each chip, ensuring easy tag differentiation. However, note the unsupported status of this classic chipset by newer smartphones since 2014, affecting compatibility with modern devices. For optimal usage, interface with dedicated NFC/RFID hardware for precise reading and writing operations.
| Brand | Adafruit |
| Model | 921 |