In this mode, Hunter Cat NFC emulates a NFC tag. It doesn’t initiate the communication, it only responds to a NFC reader. A typical application of the card emulation mode is how people use NFC in their smartphones to replace .Information. NFC Tools GUI is a cross Platform software : it works on Mac, Windows and Linux. You can read and write your NFC chips with a simple and lightweight user interface. Connect your NFC reader to your computer like the very popular ACR122U to start playing with your NFC .