I'm implementing Invisible reCAPTCHA on my website, and to reduce the number of third party JS files on page load I'd like to download the https://www.google.com/recaptcha/api.js file only once the user submits a form. Once it loads I would then use grecaptcha.render followed by grecaptcha.execute. I've implemented and tested this, and it works as expected.
My concern is that delaying this file load may negatively affect Google's ability to confirm the user is not a robot. For example, perhaps Google's JS picks up user events while they're using the page and uses those actions to verify the humanness of a user. By delaying the JS load, Google won't have those user events to take into account and may result in more legitimate users getting annoying image challenges.
The docs don't mention anything about this. Does anyone have experience with this implementation? I'd think Google relies on other info like IP address and cookies for this kind of verification, but I want to confirm.
