What Are CAPTCHAs?
Wherever we go on the internet, we encounter CAPTCHAs, those twisted words that block or enable entries on websites. Need to post an ad on Craigslist or log into your email from a new device? You may meet a CAPTCHA. Want to comment on an article or blog post? CAPTCHA. So, why do we have them? How do CAPTCHAs work? CAPTCHAs were invented to block …