These funny things were originally designed to identify 'human' user from a script attack. Later people wrote scripts to crack these captachas. So programmers added more complexity to make them 'unreadable' to a script. Unfortunately, we have reached the stage, where even humans can no longer read the words in those capchtas!
1 comment:
I totally agree with this. There are times when I absolutely dont understand what the image says. In fact rapidshare has these weird animals(cats and dogs) around the alphabets. God know why.
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