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CAPTCHA Uses Expanding at Google

posted Feb 10, 2013, 3:25 AM by Darryl Giors   [ updated Feb 10, 2013, 3:59 AM ]
I noticed yesterday that after posting a few comments on Google's Blogger platform that there was an interesting trend in the CAPTCHA served to me.

I've known for some time that CAPTCHA can perform double duty by having users decipher difficult to read text such as from old books.  People are much better at identifying letters and numbers than computers running OCR software.  The surprise I saw was what appeared to be address markers on curbs and home facades alike.

CAPTCHA picture

I can only assume that this is an effort to enlist the aid of humans to improve the accuracy of identifying address markers visible in Google Street View.

CAPTCHA is often a necessary evil to prevent abuse of web resources.  I'm happy to see that it can be put to productive use to improve the accuracy of our online data.