From Wall Street Journal.

Captchas, the online tests designed to tell if you’re robot or human, have been getting harder. What began as a simple text to prove you’re not a robot has rapidly evolved into a battle between humans and AI as more and more data has made these systems better at solving tasks.

WSJ explores the latest online methods to prove that we’re not a robot, and explains why AI algorithms may always eventually get the upper hand.

Chapters:
0:00 Captchas are getting harder
0:40 Origins of Captcha
1:51 Early Captchas
3:02 Visual Captcha
4:34 Nocaptcha
5:29 Future Captchas

‘The Tech Behind’ explores the amazing engineering, computing, science and algorithms that power our favorite tech.

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