What Are Those Deformed Letters Called That Are At The Bottom Of Online Forms For Security Purposes?

http://en.wikipedia.org/wiki/Captcha

The Completely Automated Public Turing test to tell Computers and Humans Apart

2 comments to What Are Those Deformed Letters Called That Are At The Bottom Of Online Forms For Security Purposes?

  • finance_

    They are security images generated by the server to protect against automated scripts used to flood or mass register or send data to the server. More or less, it is to prove a person is submitting the information. They are deformed because some scripts can figure out the letters in plain-text.

  • coryrams

    To verify if you are a human, and not a script.

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