Making CAPTCHAs Even Harder With 3-D Models

Michael G. Kaplan writes "CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Humans Apart) are commonly used to prevent computers from filling out web forms. Computer vision experts have been able to design programs to foil CAPTCHA with a high degree of success. I have designed a CAPTCHA that is based on the identification of attributes contained in an image generated by the grouping of easily recognized 3-D objects. I call this the Virtual Photographic CAPTCHA and it is likely to remain invulnerable to automated attack for many years to come. A novel anti-spam system necessitated its development."

Comments

CAPTCHA Matrix

[Doc Ruby]

My favorite counter-AI techniques blew away those crazy-font CAPTCHA gateways as well as it'll slay these. The AI spider ran into CAPTCHA images of crazy-font text a machine can't read. Meanwhile, it ran a "free porn" website, and passed the CAPTCHAs it was up against back to the humans madly scrabbling for the free porn. The CAPTCHA got the humans to solve the CAPTCHAs, and sent the answers back to the CAPTCHA gateways, easily logging in. It's a massively parallel harness for human psychic energy to do machine work for machines. Just like The Matrix from the movie. Maybe that's powering this Slashdot post right now.