NFC RFID Example with Arduino. Her we will define the PN532 as a reader for NTAGS. Every NTAGS card has a code that is viewable and changeable with PN532. To do that programming will be required for different functions. First, .Download the Adafruit PN532 library from github. Uncompress the folder and rename the folder Adafruit_PN532. Inside the folder you should see the Adafruit_PN532.cpp and Adafruit_PN532.h files. Install the Adafruit_PN532 .