Google is making changes to its reCaptcha system: distorted text images are out, while numbers and more-adaptive, puzzle-based authentication checks are in. The change is necessary because text-only ...

The goal of the Turing test is for a human to work out whether they're communicating with another person or a machine. Computers have gotten better at imitating people but they've also improved at ...

Google’s brilliant solution to one of the Internet’s most annoying problems If there’s one thing more annoying than passwords, it’s CAPTCHA puzzles that websites use to screen out robots from ...

Sometimes it feels like it would be easier to translate hieroglyphics than try and determine what garbled text lies in a CAPTCHA box. We've all been annoyed by it, yet the reason it exists is to keep ...

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 ...

Carnegie Mellon University researchers pioneered CAPTCHA, a system to differentiate humans from bots, revolutionizing web ...