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This is a MiFare Classic keychain fob - often used for electronic locks or customer identification. The tag contains a NXP S50 chip and an antenna, and is pa...

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This is a MiFare Classic keychain fob - often used for electronic locks or customer identification. The tag contains a NXP S50 chip and an antenna, and is passively powered by the reader/writer when placed a couple inches away. Can be used with NFC Shield.

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

Jargon buster

Plain-language definitions for the technical terms used above.

EEPROM
A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
Shield
An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.

Related Tutorials

Free guides on learn.littlebird.com.au

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