Uploaded December 2008 | Updated September 2026, 3 hours ago

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Who is digitizing all those old books so we can read them online? Surprisingly, the answer might just be you...

This ScienCentral News video explains how twenty million words a day are now digitized by regular internet users, thanks to a new anti-spam program called "re-captcha". For the full article on how this technology works, go here: tinyurl.com/6dyz8y
sciencentral.com/video/http://www.sciencentral.com/video