Qwiic Dynamic NFC/RFID Tag Hookup Guide
El Duderino 
SparkFun ST25DV64KC Arduino Library
Note: This library assumes you are using the latest version of the Arduino IDE on your desktop. If this is your first time using Arduino, please review our tutorial on installing the Arduino IDE. If you have not previously installed an Arduino library, please check out our installation guide.
The SparkFun ST25DV64KC Arduino Library provides an exhaustive collection of examples to take full advantage of the Qwiic Dynamic NFC/RFID Tag including reading and writing the user memory, controlling the read/write permissions, altering the read area sizes, and applying password control. On top of this the library includes examples showing how to use NDEF (NFC Forum Data Exchange Format) URI, WiFi, and Text records you can read with a smart phone. You'll need a compatible app on your phone like ST's "NFC Tap" App available on the Apple© App store or Google© Play.
Install the library into Arduino by searching for "SparkFun ST25DV64KX Arduino Library" in the Arduino Library Manager. Users who prefer to install the library manually can download it by clicking the button below:
Arduino Library Documentation
We have an in-depth guide for the library covering all examples as well as the complete API reference you can read through here: