I've made a custom form and I am looking at a way of validating that its a human completing the form via email validation ONLY.
Currently CAPTCHA is fantastic and it offers the option of validating a form via email. I want to make the email option mandatory.
The issue currently experiencing is that we have setup a custom form for people to vote on a book and we are very sure 1 week ago a person or group of people began to misuse the form by voting multiple times with bogus names and emails (some emails have actually been stolen). This obviously messes up the accuracy of the voting.
Has anyone in the Squiziverse done this type of thing before?