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You’re about to make an online purchase but all of a sudden you’re asked to decode a strangely twisted word, make a simple calculation, or identify which images presented include a bus. What just happened? What is this popup that looks like a cross between a game and a test – but that’s definitely wasting your time?
You were confronted with a CAPTCHA or Completely Automated Public Turing test to tell Computers and Humans Apart. It’s a method used by website owners to identify human visitors and users, then enable logged in users to make purchases, view pages, or create accounts….
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