The system that is used to verify whether or not a user is human has been around a while and it had to evolve because machines were getting better at reading the text than humans. With its latest iteration, Google says you’ll no longer have to input anything at all .

These tests are called CAPTCHAS which is an acronym for Completely Automated Public Turing test to tell Computers and Human Apart.

CAPTCHA is such an elegant tool for training AI, with all those scammers flooding the internet.