1. Using an NFC-equipped mobile phone as a token in physical access control
http://essay.utwente.nl/65419/1/thesis_nfc_martijn_bolhuis_final.pdf
2. NFC Basics
http://developer.android.com/guide/topics/connectivity/nfc/nfc.html
3. NFC Driver Notes
http://elinux.org/NFC_driver_notes
4. Accessing the embedded secure element in Android 4.x
http://nelenkov.blogspot.com/2012/08/accessing-embedded-secure-element-in.html