CAPTCHAs are those now ubiquitous challenges you encounter to prove that you’re a human and not a bot when you go to log in to many websites. As a computer scientist, I see CAPTCHAs as an effective ...
The goal of CAPTCHA is to pose a question or task which is impossible for the computer to complete while also being easy for humans. Take for example the distorted word CAPTCHA type which shows an ...
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