is-empty

xod-dev/pn532-nfc/is-empty

Checks whether a UID is empty which corresponds to “no tag”
is-empty
@/is-empty
Checks whether a UID is empty which corresponds to “no tag”
IN@/nfc-uid
The UID of an NFC tag
is-empty
ININOUTOUT
OUTboolean
To use the node in your project you should have the xod-dev/pn532-nfc library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.