Looks like it requires some basic OCR and pretty beefy image analysis(assuming the right side is presented as an image). Well within the bounds of modern computing, but expensive enough that you’d be hard pressed to generate thousands of spam accounts. Captchas are less about completely preventing computers from signing up and more about making it inconvenient and expensive enough that most people won’t bother.
Looks like it requires some basic OCR and pretty beefy image analysis(assuming the right side is presented as an image). Well within the bounds of modern computing, but expensive enough that you’d be hard pressed to generate thousands of spam accounts. Captchas are less about completely preventing computers from signing up and more about making it inconvenient and expensive enough that most people won’t bother.