While all are chatting around Lotusphere 2011, I am working for the community :)

Here is a simple CAPTCHA test for XPages...

It is not a turing test, actually. But it will keep spammer bots away until they become obsessed with your site...

You can download a sample database (see update below if you have problems). You are free to use, alter, extend or distribute this code. Just don't forget credits :) The screenshots are here:





It contains a custom control and a script library (SSJS). You may simply import these two into your database and include the custom control on your page. As I said, it is not a turing test. It just makes it difficult to exploit web forms. However, it is not impossible to break it...

The custom control also supports multi-language. Just update the list of languages supported and setStrings() function for custom strings...

..... 
 var LANGUAGES=["en","tr"]; // Languages supported. First is default... 
 ....... 
 this.setStrings=function() { 
 
 captchaTexts["en"]=["zero","one", ... ,"twentyfour","twentyfive"]; 
 captchaTexts["tr"]=["sıfır","bir", ..., "yirmidört","yirmibeş"]; 
 
 switch(captchaLanguage) { 
      case "en": 
              this.validationMessage="Are you sure about your math?"; 
              this.emptyMessage="You forgot? Or you don't know about Math..."; 
              this.chooseString="Choose..."; 
              break; 
      case "tr": 
              this.validationMessage="Matematik bildiğinizden emin misiniz?"; 
              this.emptyMessage="Unuttunuz mu? Yoksa matematikle sorununuz mu var?"; 
              this.chooseString="Seçiniz..."; 
              break;                 
      }                 
 }

UPDATE:
I noticed there is a problem with serialization in pre-8.5.2 versions. So I uploaded a different version as R2.0 here. Notice that the object structure and custom control implementation has been changed here and you should see different places for multilingual texts...