MFRC522 - RFID reader / writer

This library is based on this open source project: http://ift.tt/1gZ8I74

It allows reading and writing to RFID cards using RC522 modules. The RFID modules and the cards (or stickers) are inexpensive.

The pins layout is described here: http://ift.tt/1YOqRMd
Make sure to connect the module 3.3v pin to the Arduino 3V3 pin.

Each card has a unique UID....

MFRC522 - RFID reader / writer

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