The BBC Reports on something the new improved LISNews will be running, reCAPTCHAS. “What we do is the equivalent of placing the image on a rubber sheet and pulling it to distort the geometry,” he says.
Using the reCAPTCHA system von Ahn’s team is digitising documents and manuscripts as fast as the Internet Archive can supply them, and the good news for book lovers (and bad news for spammers) is that the supply of reCAPTCHAs is not likely to dry up any time soon.
“There’s no danger of us running out of words,” says von Ahn. “There’s still about 100 million books to be digitised, which at the current rate will take us about 400 years to complete.”
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