http://www.bourdon-s.com/boxson.html
http://tiptopboards.free.fr/arduino_forum/viewtopic.php?f=2&t=16
http://les-electroniciens.com/videos/arduino-ep14-comment-utiliser-le-module-rfid-rc522
https://github.com/miguelbalboa/rfid
http://www.mediaenlab.com/spot-guide-de-conception/