- (void)viewDidLoad{
dtdev=[DTDevices sharedDevice];
NSLog(@"DTDEV=%@",dtdev);
[dtdev addDelegate:self];
[dtdev connect];}

-(void)magneticCardEncryptedData:(int)encryption tracks:(int)tracks data:(NSData *)data

- (void)magneticCardData:(NSString *)track1 track2:(NSString *)track2 track3:(NSString *)track3

-(void)connectionState:(int)state {
switch (state) {
    case CONN_DISCONNECTED:
        //Disconnected
        break;
    case CONN_CONNECTING:
        //Connecting
        break;
    case CONN_CONNECTED:
        //Connected
        break;
} }