7
votes
4answers
310 views

Candidate authentication in large scale assessment

First of all, I'd like to apologize beforehand if the questions I am about to ask are not really suitable for this site. I could not think of any other category to post under. Right, here goes. We're ...
6
votes
5answers
1k views

Preventing online voter fraud

As part of a promotional campaign, my company wants to launch a site where users (and potential users) of our product will be required to register and vote for certain choices. Depending on how ...
12
votes
5answers
296 views

I need ideas for blocking a single malevolent user

Let me throw out this problem I'm having to some of my technical peeps and see if you guys have any new suggestions: We have a website that sends text messages and voice mails for our clients. ...
21
votes
7answers
4k views

How to prevent cheating (extra votes) in online contests?

Mitigating Cheating & Voter Fraud in Online Contests… We run online contests of various sorts that involve users voting on entries (usually one vote per user per day). The prizes range from ...