Re:Hacking Google ReCAPTCHA v3 Using Reinforcement Learning
by tracker1 on Thursday April 18, 2019 @12:57AM
(#19688830)
Except then, you have autofill/extensions that form fill for you.
Generating simple math question/answer can work well enough to keep out non-targeted traffic (someone not targeting a bot tailored to your site).
I imagine using a standard text field and then hiding it using css probably works much better than setting a type=“hidden” field. I also usually use something like name=“phone” and then just naming the actual phone field something else, if needed.