Setter for the Captcha Challenge listener.This is a class method to register for the Captcha Challenge Listener.
// register the client as delegate for this request [SMPUserManager setCaptchaChallengeDelegate:self]; SMPUserManager* userManager = [SMPUserManager initializeWithConnection:clientConn]; [userManager registerUser:"username" password:@"password" error:&error isSyncFlag:NO]; ... } -(NSString*)didReceiveCaptchaChallenge:(NSString*)base64ImageString { // Return text String input from user. }