@Ealdwine_Drasax My Survey is not necessarily as flawed as you suggest. I was able to ban IP and extra devices. Allowing for one and only one take of the survey. This is however just a test run. Did any of you study stats in college?
IP addresses can be easily faked unfortunately, I have two IP address at home myself alongside many on my mobile data and the Vpn. It's sadly an issue, we've encountered here before, we were considering making a system linked to the forums but even they would be vulnerable to similar manipulation. Even multiple devices doesn't do anything since that based on recognising the browser which means people can change or clear the browser and vote under a new IP infinitely.
It's also been noted before that the people on the forums don't really represent those on the server.
I think you should really consider these factors.