Compiler's IP address and prevents double compilation

which widget detects the compiler's IP address and prevents double compilation to the same subject?

Thanks.

Nico

If you're referring to getting the submitters IP, there's no need for a widget. Here's how to get the submitters IP How-to-Find-the-IP-Addresses-of-Form-Respondents.

If I also get your second question right, you want to limit the same IP address from submitting the form? If yes, that's possible with Unique Submission. You can set it to Check cookies and IP to limit the submission based on IP Address. Guide: How to Setup Unique Submissions of a Form

If you have any other questions, let us know.