addOnCardPresentCallback method

void addOnCardPresentCallback(
  1. void callback()
)
inherited

Adds a callback to be invoked when an RFID card is detected by the reader.

Register a callback to be notified when an RFID card comes into the reader's field of detection. This is useful for triggering read or write operations automatically upon card presence.

Example:

reader.addOnCardPresentCallback(() {
  print('Card detected!');
});

Implementation

void addOnCardPresentCallback(void Function() callback) {
  _onCardPresentCallbacks.add(callback);
}