Picture puzzles separate human from machine
July 15, 2010 | Source: New Scientist Tech
Researchers at National Cheng Kung University in Taiwan have developed a tool that camoflages images and could be used to make Captcha images, to ensure that website users signing up for accounts are genuinely people, rather than software bots.
The work fits with the theory that the brain can only be conscious of one visual feature at a glance, but can track the locations of multiple features simultaneously.