Hi Yaw,
Presumably.
I use an appearance of "read_nfc" applied to a bar code type. This starts
up an NFCWidget which is a modified version of your barcode widget. I have
also added an NFC Activity to read the NFC. This just reads an NFC tag
using the Android NFC Adapter
https://developer.android.com/reference/android/nfc/NfcAdapter.html.
regards
Neil