reCAPTCHA is a free CAPTCHA service that help to digitize books, newspapers and old time radio shows. About 200million CAPTCHAs are solved by humans every day. In each case there are about ten seconds of time are being spent doing this.
reCAPTCHA improves the process of digitizing by sending words that can not be read by computers to the web in the form of CAPTCHAs for humans to decipher.
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