RFID-RC522 RF IC Card Sensor Module

http://dx.com/p/rfid-rc522-rf-ic-card-sensor-module-blue-silver-203517

Branchement
Reset > Pin 5 SS > Pin 10 MOSI > Pin 11 MISO > Pin 12 SCK > Pin 13 Ground > Ground 3.3v > 3.3v

Code
http://www.grantgibson.co.uk/blog/2012/04/how-to-get-started-with-the-mifare-mf522-an-and-arduino/

http://www.grantgibson.co.uk/blog/wp-content/uploads/2012/04/ggrfid_en_ino.txt