File attachment as unique value

Hello Lukasz,

At the moment, Duplicate Killer does not compare file attachments as a unique value — the plugin currently focuses on text-based fields (such as email, text, phone, number) to prevent duplicate submissions.

That said, this is a very good idea and a use case we’ve already noted. Comparing file attachments (for example by filename or file hash) would be a valuable addition, and it’s definitely something we’re considering for a future update.

Thank you very much,
NIA