The first thing you will need for this project is an Arduino Uno board.
Then, you need an NFC shield. There are many NFC shields available on the market, but for this project, we chose an NFC shield V2.0 from SeeedStudio. We made this choice as the shield has good documentation and because some example code was already available.
You will also need a relay module. For this project, we used a 5V relay module from Polulu.
Finally, to make the different electrical connections, you will need some jumper wires.
The following is the list of all hardware parts you will need for this project, along with links to find these parts on the Web:
The Arduino Uno board (http://www.adafruit.com/product/50)
The 5V relay module (http://www.pololu.com/product/2480)
The Arduino NFC shield (http://www.seeedstudio.com/depot/nfc-shield-v20-p-1370.html)
The breadboard (https://www.adafruit.com/product/64)
Jumper wires (https://www.adafruit.com/product/758)
On the software side, you will...