An occasional review of technology, markets, and ideas.

Not the best CAPTCHA...

A math problem is the worst CAPTCHA ever.

A CAPTCHA (which stands for "Completely Automated Public Turing Test To Tell Computers and Humans Apart") is meant to be a lightweight challenge-response test to distinguish inputs from humans versus machines. The point of a CAPTCHA is to provide some image and then ask the user to perform some action involving invariant recognition, segmentation, or contextual awareness which is easy for a human to do, but very hard for a computer to do.

Unfortunately, computers are exceptionally good at performing lots of computations very quickly so \( 6+1 \) is perhaps the worst CAPTCHA you can come up with.

Not a good CAPTCHA

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Jamie Larson