Adafruit 13.56MHz RFID/NFC White Tag - NTAG203 Chip

This blank 13.56MHz RFID/NFC Tag with an NTAG203 chip is a versatile choice for applications like train and bus passes, contactless payments, and various systems where proximity cards are needed. The tag operates passively, powered by a nearby reader or writer.

The NTAG203 chip allows reading through most 13.56MHz RFID/NFC readers. Ensure compatibility with ISO/IEC 14443 Type A cards, as other standards like FeLica exist. The tags feature rewrite capability, with up to 144 bytes of data capacity in EEPROM banks and can endure more than 10,000 rewrites, making them robust for frequent updates.

Compatible with devices like the PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino, they offer easy integration into various systems. Each tag has a unique, unchangeable 7-byte serial number for straightforward identification.

Utilizing the NTAG chipset, these tags, classified as 'Type 2', interact seamlessly with any smartphone, offering improved security and broader compatibility over "Classic 1K" cards by avoiding associated licensing issues.