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The Conversation USA

CAPTCHAs: The struggle to tell real humans from fake

  • Written by Tam Nguyen, Associate Professor of Computer Science, University of Dayton
imageIt's not easy for computers to tell humans from other computers posing as humans.Andrii Shelenkov/Stock via Getty Images

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.

Websites and mobile apps have long been attacked by bots on a massive scale. Those...

Read more: CAPTCHAs: The struggle to tell real humans from fake

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