Making good use of your computer time

It may come as a surprise to some that whenever you decipher scrambled words - known as captchas - before accessing sites, you are doing much more than merely authenticating that you're a human being and not a computer bot.

When you make sense of a "Completely Automated Public Turing Test To Tell Computers and Humans Apart" or captcha, you are also helping online search giant Google digitise books and newspapers.

Text: Business Standard

Images: AP/Reuters