- (void) deviceConnected;
- (void) deviceDisconnected;
- (void) plugStatusChange:(BOOL)deviceInserted;
- (void) dataInOutMonitor:(NSData*)data incoming:(BOOL)isIncoming;
- (void) deviceMessage:(NSString*)message;
- (void) lcdDisplay:(int)mode lines:(NSArray*)lines;
- (void) emvTransactionData:(IDTEMVData*)emvData errorCode:(int)error;