Implementing captcha in Flash

Question

I am developing a flash registration form and I need to enable captcha dynamic images for confirmation. Can anyone recommend a better solution for this?

Answer 1

This is not so different from captcha in HTML form.

Suppose you use php on a server and you have captcha.php scritp that generates a captcha image and stores its value in a session. In the HTML form, you must use the element and set its src to captcha.php. The user will fill in the field with the text that they see in the image. In the script that receives the message, you should check if the user input matches the session values.

In flash form, this is exactly the same. You upload an image calling captcha.php and ask the user to enter an additional field. Then, when you send data to the server, you pass the value entered by the user in the captcha field, and the server matches it with the value that it stored in the session when captcha.php was called.

So basically it is the same as in the HTML form.

Answer 2

Captcha html-, , html . Flash-. -, .

. captcha Flash-.

Answer 3

captcha - . , ... , , . reCAPTCHA http://recaptcha.net/. , flash, .

Answer 4

, . - , " , ?" .

, , - , =/

, - [ - -] .swf s "register" =/

, , Captcha , , .

Answer 5

CAPTCHA -/.

, FF, IE ( , ) cookie -. , - .Net, http- , captcha - (- )

:

• (Guid) -.
• flashvar -
• captcha url. .. captchaImg.aspx? T = xxxxxxx
• ,

This approach works very well for us.

It is also safe for web farms.

Answer 6

public class Captcha extends Sprite{

   private var question:String = "How do you feel?";        
   private var _answer:String;
   private var isRobot:Boolean;

   public function Captcha(answer:String){
            _answer = answer;
        }
   public function checkAnswer():Boolean
       if(answer != "sad"){
          isRobot = true;
          return isRobot;
       }else{
          isRobot = false;
          return isRobot;
       }
    }
}