Behind the Scenes

Somewhat more technical posts about how things work. Information that can help you better understand your experience of digital technology.

The New Simplicity of ReCAPTCHA

If you've ever filled out a form on the Web, you've probably had to negotiate a CAPTCHA. It's that box with letters and numbers you have to type, usually from a distorted image, to prove you are a human being. The Web is so full of robot spammers, that sites must prevent as much spam as possible or be swamped.

CAPTCHA ("Completely Automated Public Turing test to tell Computers and Humans Apart") can be a pain for users. But Google has turned its version of CAPTCHA, called reCAPTCHA, into a very effective and simple solution.

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