Hunting cheaters in a voting competition

Question

Currently we are running a competition which proceeds very well. Unfortunately we have all those cheaters back in business who are running scripts which automatically vote f

Answer 1

Sorry for the double post, but I wasn't allowed to post two URLs in the same post...

If you're looking at building your own tracking, maybe this link might provide some inspiration: https://panopticlick.eff.org/ Turns out that a lot of browsers can be uniquely identified, even without any form of tracking cookies. I'm guessing a vote-bot might give a very specific fingerprint?