Add this property to your view controller
@property (retain, nonatomic) IBOutlet UIView* mySigView;
Connect mySigView property with your UIView (NICSignatureView) in storyboard
Trigger the following action in your view controller after you hit a save button:
NICSignatureView* sig = (NICSignatureView *)self.mySigView;
UIImage* myimage = [sig signatureImage];
UIImageWriteToSavedPhotosAlbum(myimage, nil, nil, nil);
Do not forget to import NICSignatureView.h in your view controller
#import "NICSignatureView.h"
You can now find the signature in your camera roll