So, how does Captcha know that I’m not a robot? This brings us to the previous question of how CAPTCHAs can still work today, even if they’re generally used less frequently than in the past.

It's getting increasingly difficult to prove you're not a robot using captcha tests, and humans are getting increasingly annoyed about it.

“Is it just me, or have those ‘I am not a robot’ tests started getting harder?” British comic Jack Whitehall quipped in his latest Netflix special “Settle Down.” ...