Email Comment Authentication plug

I tried searching the forum but couldn’t find anything on this …

Have people had success running the email comment authentication plug in from skippy? (https://skippy.net/download/plugins/commentauth/) I’m guessing it functions pretty much the same as engadget’s email comment system.

Does it work with the latest version of WP?
Any known issues, problems or tips or tricks to get it to work?

Any insights appreciated.
/kid