Use Cases
Captcha at checkout
You can protect your store checkout by adding recaptcha to its final step. Recaptcha appears in payment section. Just go to module configuration, select option and clear Magento config cache.
It is possible to show recaptcha for guest as well as for signed-in users. But we recommend to show recaptcha only for guests. Try to keep checkout process for signed-in user as simple and quick as possible.