14 DAY TRIAL // Some time ago, there was some news about CAPTCHA code being easy to decrypt by bots and such and that not even this security measure can stop them. Well, here comes something new - the invisible CAPTCHA, which I think is going to make a difference.
Now, for those of you that went: "What the heck is CAPTCHA?", let me explain things to you - have you ever visited a site and when you wanted to post a comment, the form over there asked you to fill a box with some letters from a distorted image? Well, that image is CAPTCHA - the acronym stands for Completely Automated Public Turning test to tell Computers and Humans Apart. May sound complicated, but it's just a test used to stop bots from posting spam or from registering thousands of accounts and stuff like that.
In any case, some forms of it have been easily hacked and bots will still spam on sites, even with this measure involved. But I read on this blog about the invisible CAPTCHA. Now that is one hell of a great idea.
Let me explain how this works - when a bot sees a text box that it can fill with some spam, it simply cannot help itself and fills it up instantaneously. That's the bot's vulnerability! You simply post a CAPTCHA on the site, that is invisible to the human, but the bot will act just like the AI in some shooters. You know, that AI that knows where you are before it even sees you and probably shoots through walls and stuff like that. The bot, when it'll see the CAPTCHA and a text field it will simply fill it up. The human won't, because he can't see it, so before the comment will be submitted, a test will be done to see if the text box is empty. If it isn't, then the comment won't be posted. That's pretty smart, huh?