Why captcha

Researchers have tried asking users to classify images of people by facial expression, gender, and ethnicity. You can imagine how well that went. People have tried stymying image recognition by asking users to identify, say, pigs, but making the pigs cartoons and giving them sunglasses. Researchers have looked into asking users to identify objects in Magic Eye-like blotches. Other researchers have tried to exploit the fact that humans have bodies, using device cameras or augmented reality for interactive proof of humanity.

You need some type of challenge that works with someone from Greece, someone from Chicago, someone from South Africa, Iran, and Australia at the same time. And it has to be independent from cultural intricacies and differences.

Figuring out how to fix those blurry image quizzes quickly takes you into philosophical territory: what is the universal human quality that can be demonstrated to a machine, but that no machine can mimic? Data Security Application Delivery Application Security. Nik Hewitt. Terry Ray. Latest Articles. App Security Edge Security DDoS Essentials.

Essentials Protocols. Connection Optimization Essentials. Attack Tools Essentials Threats. Essentials Threats. Puzzles that usually ask text-based questions is an example of this and they seem to be easy to circumvent if you can program a bot to learn the answer.

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