The repeat submitter could easily just be trying to teach you a lesson. I usually set a cookie and leave it at that.
Please note that the cookie contains the unique survey key. You don't want the end user being blocked from future surveys you carry out (or should you reset the results of the current survey). If they do decide to empy their cookies not much you can do. If they are blocking cookies just stop them from taking the survey. Well that's what I do anyway. If you force a login/register process, well you won't get many participants in the survey. > -----Original Message----- > From: Ezine [mailto:[EMAIL PROTECTED] > Sent: 20 July 2003 05:22 > To: CF-Talk > Subject: RE: track duplicate survey votes > > > If you are looking for the closest thing to secure as you can without > requiring a log-in.. the > do track both cookies and IP. There are two things with just > tracking IP.. > that you should know about anyway.. I > If you have a client on a network behind NAT or behind a firewall.. and > he tells his co-worker behind the firewall.. then they will > probably both > have the same IP address.. so it won't let his co-worker vote.. > and Dial > up users get a new IP address when they disconnect and reconnect(a process > that takes all of 30 seconds). The point is though.. that > while tracking > cookie and ip is a good solution.. it can't beat having the user > log-in for > higher security type polls. For all other polls/surveys where > you want the > most security that you can without requiring the user to log-in.. > then IP > and cookie is as high as you can go as far as I know. > > You might also look into getting one of those images that have > numbers that > only humans can read.. so people will not be able to program > bots that will > simply submit over and over again. > > -Zine > -----Original Message----- > From: Ewok [mailto:[EMAIL PROTECTED] > Sent: Sunday, July 20, 2003 1:53 AM > To: CF-Talk > Subject: Re: track duplicate survey votes > > > store cgi.remote_addr with each submission and dont let the same IP vote > twice > its easy to delete cookies and vote again. It's more of a pain to > change ur > ip to vote again > and if someone does... hey... they've got nothing better to do anyway : ) > > > "Tim Laureska" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > > I have a basic yes/no survey question at a site that is not password > > protected (we'd like to keep it that way so as not discourage response) > > > > Our recent survey question was obviously jumped on by somebody who > > placed many more yes votes than would be realistic for the issue .... > > I'm trying to figure out the best way to track duplicate votes if this > > is possible ... this may be a simple problem but its new to me and was > > hoping someone could give me a "best way to do this" nudge in the right > > direction > > > > Thanks in advance > > Tim Laureska > > > > > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
