Mail Sending : Enter the word from image
It's been around for a few months.
I know about that for registration purpose it has been around.
An increasing number of sites do this to reduce submissions by bots, because it's something that's hard for computers to do but relatively easy for humans. Google on "reverse Turing test" or "captcha" (a loose acronym for "Completely Automated Public Turing test to Tell Computers and Humans Apart") to learn more about it.
I think I'm receiving all the emails in the world that don't for whatever reason arrive at their intended destination.
That was interesting, the above was intended for the thread about mail being lost.
Once botspammers learn to decode wonkified text in image files, the next step is to do something harder, like, for example, a mathematical word problem.
It should put up that banner ad where you have to whack the monkey with the hammer. I bet a computer couldn't do that!
A program could easily whack a mole. I once worked with some QA guys would used Microsoft Visual Test to test GUI apps. They wrote a Visual Test script to play some web game that involved navigating a maze. In the game rankings, most people had 20-30 seconds. The top two slots (theirs) were sub-seconds times! :-)
"It stops bots, that register loaads of email addresses automatically. "
I've never paid attention, but if *I* were designing the system, I'd get a word from a dictionary list (10k entries), then render it into a gif/png, do the overlay grid and funhouse mirror stuff, and render to the browser.
Philo - that algorithm's already been cracked. See:
Phillip J. Eby
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