CardReaderObserverSpi (Keypop Reader API - 2.0.0)

```
public interface CardReaderObserverSpi
```
Reader observer to implement in order to receive CardReaderEvent from a ObservableCardReader.

Since:

1.0.0

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onReaderEvent(CardReaderEvent readerEvent)
  Called when a reader event occurs.

- Method Detail
  - onReaderEvent
```
void onReaderEvent(CardReaderEvent readerEvent)
```
    Called when a reader event occurs.
    The event notification should be done sequentially and synchronously but this may depend on the implementation used.
    
    Parameters:
    
    readerEvent - The not null CardReaderEvent containing the event data.
    
    Since:
    
    1.0.0