When a form is created with a field that has a mandatory field embeded behind logic and the field is not complete the user can still submit the form.
Example: we use a “humanity check” field to control if you can populate an email address. The value must= X to show email. But if the value is incorrect the user can still submit the form. The amount of bots that skim past the captcha feature have become overwhelming and we need another layer to mitigate.
See example video: Welcome - TechSmith Screencast