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MiFare Classic (13.56MHz RFID/NFC) Clear Keychain Fob

SKU: ZO-748
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MiFare Classic (13.56MHz RFID/NFC) Clear Keychain Fob

This is a blank MiFare Classic keychain fob - often used for electronic locks or customer identification but also found in other systems where a small and easy to carry tag is desired. The tag contains a NXP S50 chip and an antenna, and is passively powered by the reader/writer when placed a couple inches away.

These can be read by almost any 13.56MHz RFID/NFC reader but make sure it can handle MiFare cards as there are a few other encoding standards (like FeLica) They are tested and work great with both our PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino!

These chips can be written to & store up to 1 KB of data in writable EEPROM divided into banks, and can handle over 100,000 re-writes. You can use our PN532 NFC/RFID breakout board or Adafruit NFC/RFID Shield for Arduino to read and write data to the EEPROM inside the tag. There is also a permanent 4-byte ID burned into the chip that you can use to identify one tag from another - the ID number cannot be changed.
 
Technical Details
  • S50 chip specification:
    • 1 KiloByte (8 KiloBit) non-volatile EEPROM storage
    • Built in encryption engine with 48-bit key
    • 4 Byte unique identifier burned into the chip
    • 13.56 MHz frequency

    Tag specification:

    • 38mm x 30mm x 3mm / 1.5" x 1.1" x 0.1"
    • 3.5 grams / 0.12 oz
    • Works about 2" away from reader

    Downloads:

    NXP S50 datasheet
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